Tul Bahadur Pun VC won the Victoria Cross fighting for Britain in the 3rd Battalion 6th Gurkha Rifles. He is 1 of only 12 living recipients of this country's highest award for valour. However, the British Government has refused 84 year-old Mr Pun VC's application to settle in the UK, to seek urgently needed medical treatment, on the grounds that Mr Pun VC "failed to demonstrate strong ties with the UK". See here.
Ronnie Biggs was allowed to come back for medical treatment.