I keep seeing the issue of what is allowed through LHR security and the dreaded step of having your baggage pulled out for additional scrutiny on several different travel forums. According to the Heathrow.com website…”The following restrictions apply to all liquids, creams, gels,pastes,and aerosols taken through security control…” The rest of the rules that follow are what we’re all used to as to amounts, etc…It would explain why things like deodorant cause a problem at LHR and don’t cause an issue with USA TSA rules.
I’m sure there are people who’ve gotten their stuff through with no issue, but if time is tight it helps to be aware.