Quick back story.

Been off the road for around a year, started every now and then, first time every time.

Took it down for a MOT, started and ran spot on on the way there and during MOT, never missed a beat.

On the way back she was warm so i gave a couple of little blasts, pulled fine, no miss fires etc.

Got to the end of the street and it cut out.

Starts with a little throttle but wont idle, again runs fine under throttle, just very low idle and stalling.

Changed plugs and still the same.

Any ideas? Since it worked fine for the MOT but not now its got me baffled!

Thanks in advance.

Steve