I've noticed that BA's Economy Luggage allowance is 23kg, vs the standard 20kg.

Does this very "specific sounding" 23kg indicate that BA is very strict with checked in baggage allowances - how much allowance do they give (especially at ROM & LHR)? Are there any particularly strict airports?

I have a Star Alliance RTW ticket which gives me room for 64kg (although I suspect I won't use all of that ), but could see myself with around 30kg potentially. My concern is that I will be flying BA to Rome in the midst of my Star Alliance RTW.

The topic concerned me after a friend was charged by KLM at Arlanda recently - any airline handled by Novia at Stockholm Arlanda seems to be strict with excess baggage - I know the staff are told they have no leeway.

Out of interest, are there any other airlines/airports that stick out as being particularly good/bad with respect to excess luggage tolerance.