Erm ... not a clue. But a bit of detective work as listed below worked out it's at least 47.
Raleigh, almost certainly as a youngster as they were local and x 12 in the past 11 years (still have 2)
Triang probably.
Peugeot x about 12
Dawes x 8 (still have 3 Kingpins)
Universal x 1 (a terrible Stowaway)
Ridgeback x 2 (still have a Platinum)
Carrera x 4
Specialized x 5
Python x 1
Viking x 1. That was enough.
Felt x 1. Also enough; it near killed me.
Whyte x 1
Decathlon x 1
Benotto x 1
GT x 2
Pinnacle x 1
Merida x 1
Eastway x 1
Wilier x 2
Principia x 2 (still have one, for sale soon)
Columbus x 1 (still have this, my son uses it)
Keith Lambert x 1
Avanti x 1 (use this a lot)
NeilPryde x 3 (still have two)
Giant x 2
Holdsworth (PlanetX version) x 1 (still have this as my track bike)
BeOne x 1 (son uses this)
Gitane x 1 (shouldn't have sold it)
Fuji x 2 (used as a grasstrack bike)
Olagnero x 1 (in bits)
Harry Quinn x 1 (have this)
Claud Butler x 3
Kona x 1 (our other grasstrack bike)
From a search on here of the bikes I've sold:
Daytona x 1
Focus x 1
Dolan x 1
Moulton x 1
Horizon / Kingfisher x 1
Olmo x 1
Corona MTB x 1 (beer promo bike)
Graham Weigh x 1
Ernie Clements x 1
Orbit x 1
Spike x 1 (very cheap MTB-thing)
Elswick x 1
Stormer x 1 (awful thing)
Diamondback x 1
Plus a whole pile of others I can't remember.
With me going through bikes like most people have hot dinners I'll have missed a load. [Update: I've gone back through my 'For Sale' photos and added a load more I'd forgotten about

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