Originally Posted by
celle
Yes. Checks by the people who look at your passport, to see the entry stamp (if you are not a UK or EU national). They are concerned with immigration/emigration, not security.
I'd be concerned if I were you. It sounds like British immigration is stalking you. Since exit checks were abolished however many years ago that was, I have encountered UK immigration a grand total of once and that was in T3 at LHR and I must have departed a couple of hundred times from LHR (T1, T3, T4, T5), LGW (S and N), STN, LCY and EDI to destinations outside the UK.