when we first started baby ops at ema we used to fly the 737 into BGY (around 02/03), but that sadly stopped along with the other italian route pisa.
bmir will use an embraer for the charter if out of lba i would have thought, the baggage allowances are agreed with the charter dept and the charter company, but like prev posts it is normally only around 15kgs with a gbp5 charge per kilo for excess.