Trailer wheel lock for sale

[C2 RIBS]

I have just changed a trailer and the smaller lock is no longer of use to me. The lock is a Bulldog TC100 trailclamp that seem to fit tyre size depth of 5" and tyre size from 16-17". I have attached the following link showing the product - http://www.bulldogsecure.com/bulldog...914552-848-457
I bought the lock in Sept 08 and paid £89 pounds. Any reasonable offer plus postage or collection Berkshire or Southampton. Images to follow

[C2 RIBS]

Images of trailer wheel size and lock in the new box ,not the original box

[astra]

Is that the trailer that the wheel clamp fitted on,are they 400/8" wheels.If so i could be very interested, if you no it will fit mine.