Ok after a bit of searching this is about the most appropriate thread I can find to stick my own problem on to....
I got a 53 plate 172 Cup, with 30400 on the clock and started having this problem last night. Had never happened before, then happened 3 times last night.... under acceleration, car dies, goes in to limp home safe mode and the wee squiggly warning light comes on.
As stated, switch the car off and on and it clears itself (at least until it does it again...!!).
Car goes in for a service a week on Friday, best to just live with it till then or is there anything else to do / try??
Not had a chance to see if problem has cleared itself this morning - mostly stop start journey to work!