I have a fair bit f experience fo shows in another field.
London is a mission for me, but exhibitors tend to prefer it as a venue for shows because it's closer to a guaranteed audience and preferred by exhibitors who can mistrust 'regional' shows.
The irony is that London venues are so expensive, which means exhibitors have to cough £££ to get a stand, so an exhibition can wash its face.
Trouble is, most sales are online now, so people don';t go to shows to buy, they go to 'kick tyres' and then come home and buy online at the best price they can find.
This means sellers like bass direct will have little to gain.
Obviously a manufacturer can benefit as they gain wherever the punters decide to buy.
As I say London is hard for me, but the more people who go to the Bass-Bit the more likely it is to happen again next year and be of a decent size. Use it or lose it.
P.S. Personal bet - the Bass Guitar show has an average age 20 years older than the guitar show*.
*It was a good 25 years ago I last went to a guitar show; I recall a clinic with Jennifer Batten. 'Her chops are too righteous'.