hi Darren ,
I don't know the legalities of distances between pitches but the rule of thumb appears to be a gap of 3 - 6 metres between.
this is an extract from the caravan and camping club policies,
d It is a requirement that the unit (along with any ancillary equipment) fits within the confines of the pitch whilst maintaining the 6m rule. If this cannot be achieved the Customer may be required to purchase an additional pitch (if available) or remove the ancillary equipment.
a full list of which can be found here
http://www.campingandcaravanningclub.co.uk/clubsitepolicies/I guess each site outside of the club networks, have their own policies
