Thanks for the info ppron747, especially the link. I'll have a look into it.

When you say they can visit the UK without a visa, do you mean that they won't need to apply for or bring any extra documentation - i.e. arrive at the airport with just their passports and be let in?

Sorry - I don't think I expressed myself clearly. They recently received British passports in which their nationality is stated as British Overseas Citizen. They had been British Nationals when they lived in Kenya and did not acquire Kenyan citizenship or Indian citizenship after Kenyan independence...

My mother-in-law and her three adult children recently received British Overseas Citizenship.

Could someone tell me what their rights are with regard to entry into the UK - they currently live in India.

Is it possible for them to enter the UK on a permanent basis?