I went to denmark street the other day after buying some manuscript paper from Foyles round the corner. I went into the store where the bass cellar (Literally now a cellar full of basses) is situated. It turns out I'm currently after an American P bass. Went in there told them what I do, what gear I have and what I want to get, they let me try whatever I wanted! Same happened in Wunjo's, AND in the vintage guitar store. Tried a 63 P bass that I was frustratingly short of money for. Maybe I caught them on a good day because I do know what the staff are normally like..