So the the AA man turned up spent an hour trying to work out why it wouldn’t start apparently the fact that it keeps the starter engaged for a period after letting go of the key is normal so the problem lies elsewhere. The car is recovered to the Honda dealer they diagnose an EGR valve and almost £700 later we pick the car up. So here is to many more trouble free miles a bit steep for an EGR valve replacement but at least peace of mind. WRONG!!!!!! Get up the next morning to the exact same fault with the car refusing to start like it’s got no compression only now we are £700 lighter which luckily we videoed, the AA man turned up and lo and behold the car started. So I drove it back to the Honda dealer and it’s there as we speak hopefully it doesn’t start tomorrow morning. Thank you Trevor for your input.