I kind of lifted off where they told me not to lift off. Span a bit and came a bit close to the barriers. The mechanic in the workshop sorted me out as much as they could without my locking wheelnut! They deflated the tyres and picked out all the stones. Took off my undertray and removed as much of the stones as they could. Told me to shake the car a bit to get the other stones out. Shopping list after this session is:
Auxiliary belt thing - only two ribs were shorn off.
Nearside wing mirror glass thing
Nearside clear indicator plastic thing
Rear towing eye cover thing
Towing eye thing
Respray thing (was needed anyway)
Wheel refurbishment thing (was needed anyway)