The star driver (probably not the correct term) that is used to unbolt the seat from the car is also required to unbolt the seat from the runners (which are re-used with the
JCW seats), however there is very little clearance and my socket start driver would fit due the lack of clearace between the top of the bold head and the bottom of the seat. A normal alum key style one probably would.
If I get the tool tomorrow I'll email you a picture