If that doesn't appeal to you then you can find washrooms in the "Transport" sections of some motorway service areas. Most towns from medium size upwards will also have public baths somewhere. Every camp site will have shower blocks.
Most motorway service stations have showers, although in some cases you have to ask for the key in the shop, or filling station.
If you're in towns, then public swimming baths are also an option - once you've paid they don't care if you swim or just take a shower.
Motorway service stations have showers
Some motorway "service" places have showers; but this is England, not France.
You have no right to rest in your car at British motorway places. It is a crime with a fine!
Motorway service areas have showers.
Camp Sites or Leisure Centres.
With our climate, it's possible to get a shower anywhere.
Truck stops.
i am not a trucker,
but have as they on a ship
and the best as they as to ask.
