Unless you look very dodgy (you can decide) or have a mark against on passport (unlikely after 10 years) they won’t ask. Important to kiss immigration official to ingratiate one’s self.
Just go to gov .uk (FCDO) - their information is always correct and updated. For any country as a UK citizen. No offence to all the contradicting and contrarian FB immigration experts you understand.
In short, uk citizens are visa exempted for 30 days. (Was temporarily increased to 60, soon back to 30). No visa required.
And complete any immigration requirements pre arrival on line. Sadly no little immigration form - without a pen - are handed out on the plane any more.