As from the Autumn, it will no longer free parking, they will have dedicated 24 hour security, and a new shower block is being built.
It is off J 24 on the M5.
There is a shower at the rear of the market building, for the livestock drivers, so I am not sure if you can you use it when the market is not open.
When you exit it is either by the no entry signs, or go in the car park to get out when the market day is not on, when it is open you can drive around the back where they unload the livestock.
The food in the café is very good, roast dinners, small or large size, and hearty breakfasts with real sausages, not cheap and nasty ones you get in truckstops.
There is a farm shop a few hundred metres by the front entrance, good coffee, and they do breakfast there too.