Back home, safe and sound, no arrests, no convictions
In the end, I carried bike V5, MoT certificate, insurance and driving licence, passport, spare bulbs (and fuses), a first aid kit and at the last minute I threw in a couple of hi-viz tabards - in case of breakdown rather than to comply with any laws.
The only thing I needed to show was the passport on return to the UK. But I would take it all again, minus the hi-viz, which took up too much room.
Daughter and I had a great time. Thanks to all who responded for your help.