The galley has entrances on both sides. Or exits if you prefer. Doors 2LR are behind 4AB/4JK and the galley next to/between them. There is no galley 'right next to' any seat (bar jumpseats) on any BA plane I can think of if that worries you. Here's a good tip: don't look at graphics on the BA site

The other sites linked to in the guide (seat expert/guru) are much better.