Originally Posted by
1Aturnleft
Yes. It's generally either the 77S or 77T
https://www.aerolopa.com/ba-77s
https://www.aerolopa.com/ba-77t
Both LGW based 777's in the older style configuration (non Club Suites).
Occasionally there might be an aircraft swap to something Club Suites configured but it shouldn't be expected.
https://www.aerolopa.com/ba-77l
Yes you'll need to pay for seat assignments if your Oneworld status doesn't allow for free seating.... this has been the case for almost 20yrs now.
Not totally sure but there seems to be 1 or 2 LHR 777 Club suite aircraft over at Gatwick at the moment.