Have o agree with FrequentTtraveller. BA baggage handling at T5 is still woeful in my experince. Transit of 4 hours T5 to T3 and not one of our 4 bags made the connection. Worse was that noone bothered to say a word either in LHR or in SIN or in Perth. The first we knew was when after 80mins of waiting at the belt the bags stopped arriving.
More recently flight to Edinburgh and 1 of the 3 bags failed to be loaded despite checking in 90 mins before departure.
Poor baggage handling remians an issue for BA and for anyone in transit.