Extension of stay based on retirement going for 10 day holiday UK

[Speedo1968]

I am from UK.originally with full UK passport.

Have been here on "extension of stay based on retirement" for 4 years - Khon Kaen.

Have 800K+ in Thai bank etc.

Never had problems with 90 day report. Next is due 7th August.

No dependents here.

Never had problems when re-entering from trips to neighbouring countries for a few days break.

Always had exit / re-entry visa from KK.

If I go to UK for 7 or 10 days end of this month, that is, ticket Bangkok - London - Bangkok =

Will I need a return flight booked for UK ? That is Bangkok - London.

On my return flight from UK will I need proof of funds here, or here and UK, or some cash ?

Will London end ask for proof of onward flight from Bangkok ?

Yes, if UK leaves the EU rules may change but I can't see that happening overnight.

Thanks for any advise.

[Upnotover]

You will not need anything other than a re-entry permit. If they ask anything in London just show them your re-entry permit and extension of stay.

[ubonjoe]

If you have a valid re-entry permit a return or onward ticket is not required (it the same as if you had valid visa). No proof of funds will be needed on entry.

[Speedo1968]

Thank you "upnotover" and "ubonjoe" for your very fast response.

This has answered my questions fully.

Now all I have to find is a cheap ticket, can always sleep on the beach when I get there .....

[lungbing]

As an aside, I don't think the UK being in or (hopefully) out of the EU will change anything regarding Thai visas.