I had a call 3 years ago to clear a house just south of Sale after the a recent death. We turned up to a house with the attitude of a undertaker and was met by a woman who's only concern was, she could not sell the house and buy a bungalow until the house was cleared of bikes.
The front room and dinning room were like a show room, with glass display cabinets down the walls of the room, full of NOS parts. The whole house was filled with bikes, and I soon noticed that they all only had 2.6 to 8.1 miles on the clocks. I asked the woman, why so low mileage ? She replied, my husband never had a bike licence and none of them had been on the road. It took 3 of us 7 hours to list all the parts, paper work and bikes. We agreed on a price and said we would be back the next day with a truck, as we went to leave she said, and I hope you are going to clear out the shed.
The shed was 30x80 foot, it covered the whole of the back garden. In the shed we found a shed load of bikes and parts in the same mint condition as the ones in the house.
This guy was the original bike polisher, he would buy new bikes and keep them in his showroom (front room) and when they, got a bit too dusty, he would push them in to his shed, strip them down and clean them before returning them to his show room. The low mileage on the bikes was due to him pushing them back and forth over the years. We ended up with 3 truck loads of bikes, parts, ramps and tools.