Not sure of the postcode Adam. Its on the A623.
Out of Chesterfield on the 619 towards the hilly bits (Chatsworth/Baslow)
When you get to Baslow follow the A623.
Through Calver, Stoney Middleton. Past the turning for Eyam.
When you start to drop back down look for an old petrol station on the left with the Yonderman café behind it. You are now opposite the turning for the camp site, hopefully there will be some tents there.