My opinion, possibly expressed here before, is don't use Seatguru. It's an advertising sink site and it has no interest in actually getting accurate information. It's looked at the 3 cabin crew Embraers used in the United States, which are often cramped and lacking storage space, and not noticed where the final row is. I doubt there is one accurate seat plan on Seatguru as far as BA is concerned, they are even showing aircraft which BA have long since eliminated from the fleet, in a configuration which was out of date even at decommission stage. Almost every day there is a post here that queries something seatguru has suggested, though there is clever use of the word may and might in some of their descriptions.

Use thebasource.com instead.