Just a update, rang mobility and they had no problem with the return, very helpful.
we will have to pay the early termination fee of £250 but will get back about half of the AP we paid and they offered us £100 good condition payment too.
all in all very pleased with the service from them.
so the car goes back on this Friday, someone will end up with a nice car thats been no trouble at all for the last 18 months.
now i understand that i can get the tax paid on our other car now but since thats a EV too the tax is zero anyway till they review the car tax system next April .
thanks all for the help and advice, so long and thanks for all the fish
Paul