It's a Brompton T3 which is equivalent to the current M3R in that it has 3 Sturmey Archer Gears, mudguards, rack and dynamo lighting system. The in-laws reckon they got it about 2000 but it has been left unused in a garage for the last 9 years.
The right hand/rear/9 speed lever is faulty, failing to engage gears. I got the Synchro levers on a bike with old Super Record so I'll have to investigate further...
Road or track and how much is cheap?