之前舊登有 揸bno參完軍 拎BC
According to UK immigration rules, you can get Indefinite Leave to Enter (ILE) the UK after 4 years in the British Armed Forces -
Requirements for indefinite leave to enter the United Kingdom as a foreign or Commonwealth citizen discharged from HM Forces
276L. The requirements for indefinite leave to enter the United Kingdom as a foreign or Commonwealth citizen discharged from HM Forces are that the applicant:
(i) has completed at least four years’ service with HM Forces; and
(ii) was discharged from HM Forces on completion of engagement; and
(iii) was not discharged from HM Forces more than 2 years prior to the date on which the application is made; and
(iv) holds a valid United Kingdom entry clearance for entry in this capacity; and
(v) does not fall for refusal under the general grounds for refusal.
Once you got ILE, you can live and work in the UK. You can register to become a British Citizen using form B(OTA) once you have ILR for at lease a year and meet the other requirements for registration. Registration is a cheaper process than naturalisation - registration cost £1163 while naturalisation cost £1282 - both are 2017 prices.