UK immigration law explained
UK immigration law controls who can enter, live, work, and settle in the United Kingdom. Whether you are sponsoring a family member, applying for a visa to work, or appealing a Home Office refusal, understanding the rules matters. This page covers visa types, the Points-Based System, settlement pathways, and your rights when decisions go wrong.
The short version
The UK uses a points-based immigration system for most working-age migrants. You earn points through job offer, salary, English language, or job shortage status. Family visas (spouse, partner, parent, child) have different rules based on relationship and income. Student visas let you study at approved institutions and often transition to work. Once you meet qualifying periods (usually five to ten years depending on route), you can apply for indefinite leave to remain (ILR). From ILR, you can become a British citizen if you meet residence and language requirements. If the Home Office refuses your application, you have the right to appeal to an independent tribunal.
At a glance
| Visa category | Maximum duration | Path to ILR | Typical requirements |
|---|---|---|---|
| Skilled Worker | 12 months (renewable) | 5 years | Job offer, salary threshold, points |
| Health and Care | 12 months (renewable) | 5 years | NHS or social care role, salary £20,480+ |
| Spouse/Partner | 2.5 years initially | 5 years combined | Marriage/civil partnership, income £18,600+ |
| Parent of British child | Indefinite | 10 years or via child | Sole responsibility for British child |
| Student | Duration of course + 4 months | Not direct pathway | Offer from approved institution |
| Graduate route | 2 years (extendable) | Transition to Skilled Worker | Recent completion of UK degree |
| Visitor | 6 months (renewable) | Not possible | Proof of ties, funds, intention to leave |
| Asylum/Protection | Duration of grant | 5 years | Well-founded fear of persecution |
The Points-Based System
The Points-Based System (PBS) replaced the previous multi-tier system in 2021. Most work and study visas now operate under points. You need 70 points to qualify. Points come from:
Job offer (40 or 50 points): The single largest source. A job offer in a shortage occupation, or where the salary meets the threshold, scores 50 points (2023 threshold: £26,200). Non-shortage roles where salary is at least the general threshold score 20 points; you can only reach 70 by combining with other sources.
Salary above the minimum (up to 20 points): Earnings above the threshold score additional points. At £29,700 you score 15 points; at £39,900, you score 20 points.
Speaking English (10 points): B1 level or above on an approved test, or holding a degree from a UK or English-speaking institution.
Job shortage (20 points): Occupations on the Home Office shortage occupation list score bonus points. Nurses, engineers, and various skilled trades currently appear. The list is reviewed regularly.
You combine sources to reach 70. An engineer earning £28,000 with a job offer in a shortage role and B2 English meets the requirement. A recent graduate in a role paying £22,000 might reach 70 by combining job offer (50), salary uplift (10), and English (10).
The system aims to attract workers who fill labour shortages and earn above minimum thresholds. It applies to Skilled Worker, Health and Care, Graduate, Innovator, and some other routes.
Work visas
Skilled Worker visa is the primary employment route. You need a job offer from a Home Office-licensed employer, a points-based score of 70, and evidence of your qualifications and experience. Visas last 12 months and are renewable. After five years, you can apply for ILR if you meet the salary and other requirements continuously.
Health and Care visa is designed for overseas workers in NHS and registered social care roles. The salary threshold is lower (£20,480 annual), and the visa fast-tracks to five years before ILR eligibility. This route has streamlined processing to address UK healthcare staffing shortages.
Global Talent visa targets leading scientists, academics, and digital technology specialists. You apply without a job offer and can self-sponsor if you meet criteria (published research, patents, international prizes, or recent grants). The visa lasts three years initially, then three more if you meet criteria or secure UK employment.
Innovator visa (replacing the old Entrepreneur route) is for entrepreneurs establishing a new business. You need access to £50,000 in funds (or £25,000 if you have a previous visa or been a worker in the UK), a business plan, and endorsement from an approved body (like a local authority or enterprise programme). The visa lasts three years and can be renewed.
Intra-company transfer visa allows multinational companies to move employees to their UK office. Salary thresholds are higher; sponsorship requirements remain strict.
Work visas usually permit full-time employment for the named employer. Rights to switch employers mid-visa vary by route; seeking new sponsorship typically requires a new application.
Family visas
Spouse and civil partner visa requires proof of marriage or civil partnership and an income of at least £18,600 (higher for dependants). The sponsor can be a British citizen, settled person, or visa holder. Initial visas last 2.5 years; after two years of continuous residence, you can extend for another 2.5 years. After five years total, you can apply for ILR and later citizenship.
Adult dependent relative visa brings elderly parents or siblings if no one in their home country can support them. The sponsor must earn £18,600 plus significant additional sums per dependant. These visas are difficult to obtain and reflect the UK's preference for family self-sufficiency.
Parent of British child visa is available if you are the sole responsible carer of a British citizen child or a child born in the UK to non-British parents. Evidence of full-time childcare is required. You initially receive limited leave; after ten years, you can apply for ILR, or sometimes sooner in exceptional circumstances.
Child visa allows children to join parents who are settled, citizens, or working visa holders. The main sponsor must prove maintenance and accommodation. Processing timescales are typically four to eight weeks if all documentation is complete.
Family visas do not usually permit employment unless a separate work route is met. Spouse visas acquired after 2016 do allow work without restriction.
Student visas
Student visa (Student route) allows you to study at a Home Office-licensed institution. Your institution issues a Confirmation of Acceptance for Studies (CAS), and you apply based on that. You must prove sufficient funds for tuition and living costs (set by the Home Office; typically £20,000 to £35,000 per year depending on region). Post-study, you can usually stay four months on a Visitor visa to look for work.
Graduate route (introduced 2021) allows recent graduates to work in the UK for two years after completing a degree (PhD graduates receive three years). No job offer is required. This route bridges study and work and has become the main transition pathway. During the Graduate route, you can gain work experience and move toward Skilled Worker sponsorship.
Both routes have strict attendance monitoring. Unauthorised absences or course abandonment can lead to visa cancellation.
Visitor and short-term visas
Visitor visa permits tourism, business meetings, conferences, and visiting family. You cannot work or study full-time on a Visitor visa. Visits last up to six months, and you can apply to extend or return, but you cannot accumulate time toward settlement. The Home Office must be satisfied you will leave when your visa expires; they assess your ties to your home country, finances, and travel history.
Transit visa is required if you pass through UK airports to another destination and hold a passport from certain countries.
Visa on arrival is not available for most nationalities; most visitors must obtain a visa before travel.
Short-term visas cannot lead to settlement and do not entitle you to work or access most public services.
Indefinite Leave to Remain and settlement
Indefinite Leave to Remain (ILR) is a settled status. You can live, work, study, and access most public services without restriction. It is the gateway to British citizenship.
Qualifying periods differ by visa route:
- Skilled Worker, Health and Care, Graduate: typically five years
- Spouse, unmarried partner: five years combined (2.5 + 2.5)
- Parent of British child: ten years (or shorter in exceptional circumstances)
- Asylum/Protection: five years
During your qualifying period, you must remain compliant with visa conditions. Gaps in immigration status, significant periods outside the UK, or criminal convictions can reset the clock or make you ineligible.
Residency tests vary. Most routes require continuous residence in the UK (you can leave for up to 180 days per year, or longer if permitted). Some routes (like Skilled Worker) have annual residence requirements (you must have spent at least 183 days in the UK in the relevant year).
Once you hold ILR, you have no time limit. You can work any job, study at any level, start a business, and sponsor family members.
Citizenship and naturalisation
Naturalisation is the process of becoming a British citizen. You can apply if you hold ILR and have resided in the UK for at least 12 months (some routes require longer).
Requirements include continuous residence for the year before application, good character assessment (police checks, financial stability, no immigration breaches), sufficient knowledge of English (B1 level), and passing the Life in the UK test (a 45-question multiple-choice exam covering British history, culture, institutions, and daily life).
Dual citizenship is permitted; the UK does not require renunciation of other nationalities.
The application process takes four to six weeks. Your passport is then cancelled and replaced with a British passport issued in your chosen name.
Asylum and humanitarian protection
Asylum is granted to people with a well-founded fear of persecution in their home country based on race, religion, nationality, political opinion, or membership of a particular social group. You apply once in the UK or sometimes at the border.
The Home Office assesses whether you face persecution and whether you have an internal relocation alternative (a safe part of your home country). If persecution is based on one of the five reasons and you cannot relocate safely, you receive asylum.
Humanitarian protection is a subsidiary form of protection for people who face a serious risk of harm (torture, death, or inhuman treatment) but do not qualify as refugees.
Temporary Protected Status may be granted for people fleeing conflicts (e.g. Ukraine, Afghanistan). Rights and duration vary by situation.
Asylum applicants receive limited leave initially (usually three years). After five years of continuous residence with asylum status, you can apply for ILR and later citizenship.
The process is lengthy; initial decisions typically take months to over a year. Appeals are common and can extend the timeline significantly.
Home Office decisions and refusals
The Home Office decides all immigration applications. Common grounds for refusal include:
Insufficient points: Your application scores below the required threshold (usually 70 for work routes).
Failure to meet salary requirements: Your role or earnings fall short of the salary threshold for your visa category.
Lack of proof of funds: You cannot evidence sufficient maintenance funds for dependants or living costs.
Previous immigration breaches: Overstaying, working illegally, or breaking visa conditions can result in refusal.
Character concerns: Unspent criminal convictions, fraud, or deception.
English language failure: You do not meet the required level (usually B1).
Inadequate documentation: Missing payslips, employment contracts, or marriage certificates.
The Home Office decision letter explains the reason and sets out your appeal rights. You have 14 calendar days to lodge an appeal in most cases (more time in some circumstances).
Tribunal appeals
First-tier Tribunal (Immigration and Asylum Chamber) is an independent court that hears appeals against Home Office immigration decisions. You can appeal refusals of visas, extensions, ILR, and asylum claims. You do not need to be in the UK to appeal (some appeals are heard remotely).
Grounds of appeal include that the Home Office decision was unlawful (breached the Immigration Rules or immigration law), was based on an error of law, or was not in accordance with the law. You must prove the Home Office made a clear error, not merely that you disagree.
Evidence at hearing: You can present new evidence (updated references, additional payslips, or character testimonies) that did not form part of your original application. This distinguishes tribunal hearings from paper-based decisions.
Representation: You can represent yourself, bring a friend for moral support (not to speak), or appoint a lawyer, legal representative, or qualified immigration adviser. Many advisers offer fixed-fee or payment-plan services.
Upper Tribunal (Immigration and Asylum Chamber) hears appeals against First-tier decisions. You can appeal only on grounds of law error, not factual disagreement. Permission to appeal must be granted before your appeal is heard.
Judicial review in the High Court is available in rare cases where the tribunal decision itself was flawed or the Home Office acted so unreasonably that no reasonable body would have done so.
Tribunal backlogs are substantial; waiting times currently range from six months to over two years depending on location and case complexity.
Common misconceptions
"If I have a job offer, I automatically get a visa." No. A job offer is one component. You must score 70 points overall. You also need a licensed employer to sponsor you. The Home Office retains discretion to refuse on character, documentation, or other grounds.
"I can extend my Visitor visa indefinitely." No. Visitor visas are designed for short stays. After two years of repeated extensions, the Home Office will refuse further extensions. You must either leave, apply for a qualifying visa route, or marry and apply for a spouse visa.
"Marrying a British citizen makes me automatically eligible for a visa." No. A marriage does establish eligibility, but you must still meet the income requirement (£18,600) and prove the relationship is genuine. The process takes several months.
"Asylum is granted easily." No. Most asylum applications are initially refused. Refusal does not mean persecution is irrelevant; it means the Home Office concludes you do not meet the legal test. Many successful appeals have been overturned initial refusals.
"I can work on any visa I hold." No. Most visas restrict you to named employment or specific work types. Spouse visas (post-2016) and Skilled Worker visas allow general employment. Visitor visas prohibit any work.
"ILR is the same as citizenship." No. ILR is permanent settled status with unlimited residence and work rights. Citizenship is nationality; only citizens hold passports and benefit from full diplomatic protection. You can hold ILR indefinitely without becoming a citizen.
Related concepts
- Visa sponsorship and licensed employers
- Points-Based System explained
- ILR and settlement pathways
- Asylum and humanitarian protection
- Life in the UK test
- Immigration Rule breaches and consequences
- Tribunal appeals process
- Character and criminal conviction assessment
- Sponsorship withdrawal and termination
- Dependent visa requirements
Sources
- UK Government, "Visas and immigration," https://www.gov.uk/browse/visas-immigration
- Her Majesty's Courts and Tribunals Service, "Immigration and Asylum Tribunal," https://www.judiciary.uk/courts-and-tribunals/tribunals/immigration-and-asylum-tribunal
- UK Parliament, "Immigration Act 1971," https://www.legislation.gov.uk/ukpga/1971/77
- UK Government, "Points Based System," https://www.gov.uk/guidance/points-based-system-for-visa-applicants
- UK Home Office, "Skilled Worker visa," https://www.gov.uk/skilled-worker-visa
Written by Peter Kolomiets, founder of CaseCalm. UK immigration law content reviewed 2026-05-28.
Disclaimer: This page provides general information about UK immigration law and is not legal advice. Immigration law is complex and individual circumstances vary significantly. Before making applications or decisions, seek advice from a qualified immigration lawyer or adviser registered with the Office of the Immigration Services Commissioner (OISC). Decisions in your case may differ from the general principles outlined here.