It's just another shop, albeit specialised with a grandiose hall at the back. I've always turned up and been heartily welcomed by sales staff. There's no pressure, the name sells the pianos here though goodness knows who buys their unbelievably overpriced uprights. The smaller grands are to your right as you enter, the uprights to your left. Boston and Essex(

) are through the large doors to your right and straight ahead. The larger B and D's are in the hall beyond. Note the high ceilings enhance the sound of the instruments in this inner room.
Do you realise there are four or five other shops within easy reach?
Bluthner are only three minutes walk away down Dean Street on the South side of Oxford Street...grands downstairs, uprights and Hessler etc upstairs, well worth a visit
Chappels (Yamaha)of Bond Street are now on Wardor Street near Tottenham Court Road 15 minutes walk or a short bus ride, with a near complete range of their acoustic pianos on the first floor, missing only the C7 last time I was there. Go if you like Yamaha or want sheet music as the department downstairs has a huge selection.
Then there's Jaques Samuel on Edgeware road, same distance but in opposite direction which sells Fazioli, and Grotrian mainly, but also Ibach, Bohemia, Kawai, Pleyel and supposedly Bechstein, (but you'll need to go to Harrods for Bechstein..and Petrof and Yamaha now and everything is overpriced there). Don't miss going downstairs if you get to JS.
Finally two minutes from Jaques Samuel is Markson pianos on Albany Street, who I visited for Steingraeber and Pleyel but they sell various and have the largest interesting second hand of these five, situated in their next door unstaffed showroom. They unlock it for you and leave you to play.
See websites..London is a great piano shopping centre
Hope this is helpful
Regards
Andy