Naturalisation (British Citizenship)
British citizenship is a form of British nationality that is defined in the British Nationality Act 1981 and came into force on 1 January 1983. UK citizenship can be acquired in two different ways; registration and naturalisation. In order to qualify for naturalization, the candidate must have Indefinite Leave to Remain status in the UK. Presently applications for naturalisation take at least 6 months before a decision is made.

There are 3 main ways to be naturalised in the UK and they are as follows:
Marriage to a UK citizen or a person who is settled (having ILR) in the UK – after 3 years
On the basis of work, investment or business in the UK – after 6 years
Having the Right of Abode in the UK – after 6 years

Requirements to obtain the British citizenship
Be a minimum 18 years of age
Must have good character
Must be of sound mind
Be capable of communicating in the English language, Welsh or Scottish Gaelic. The exemptions for this requirement are if the candidate is mentally handicapped or over 65 years of age.
Must pass the Life in the UK test
Should have the intention of living in the UK or in Crown Service abroad, be employed in an international organization of which the UK is a member or be employed in a company based in the UK.