Another lift
Visited Fowlers in Bristol yesterday & noticed that a number of bikes were held up in the air by a mechanism called an 'Eazy Rizer'. It looked both simple & effective; I spoke to one of the guys there & they are very impressed with them.
Its essentially a frame, shaped to accept both wheels, which is then 'driven' by way of a vertical thread mechanism. The bike is secured in this by a clamp which locks the sidestand onto the framework.
The guy said that, despite it looking slighty 'wobbely'(?), they had not had any problems - even to the extent of visitors climbing on a bike raised up int the mechanism!!!
Didn't know a price, but I've asked for someone to call me back as I reckon it will do what I want - & takes up little room when not in use.