Comment by Scoundreller

That was one of my jokes going between terminals (always by bus): has this country thought about discovering trains?

Once leaving a terminal the staff said we’d take an internal bus and I asked if that meant we wouldn’t have to go through security again, but they just meant the same one as the rest.

All of our trips were non-UK-entry but possibly some terminals do have heightened security to meet one-stop-security requirements. Didn’t seem like it but can’t be sure.