Mrs ZFT (against my advise) tried to bring some back from LHR. Declared them to security who said NO.
Would appear that (at LHR) irrespective of airline rules, security will not allow them.
The original poster asked if they were ok in the
hold. That being the case there would be no reason to declare them to security, check in maybe, but not security
As to any changes to general procedures or restrictions I will check next time I am at work (my home documentation does not go into enough detail).