I've sussed it, found photo of spoiler behind on parts page for sale and there are slide out slots on it and plastic body securing pins, so remove both p10 mm bolts and standing at rear push spoiler to the left, I will try in the next few days as Honda is at a garage, have ordered a new LED light as mine has a few blown ones a water in it so fail road worthy test, will keep you updated, many thanks for your help