When he wrote one of the Grace books that included the Amex in its plot( I didn’t read it) he was asked in an interview if he supported the Albion. He said that he wasn’t a football fan, but, had been to the stadium to watch Rugby.
I read the first 6 or 7 Grace books. They were alright to start with, a bit of a novelty reading about places I know so well, but, after the first few, the attraction started to fade and I realised they weren’t very good when compared to others in the same genre.