No. You must obtain planning permission first.
If it is being sited on a park, this will normally be arranged via the park operator who will ensure that all the manufacturer's instructions are adhered to and that Health & Safety requirements are met during the operation. If the park home is being sited on private land, you must use a specialist company, there are several in membership of the NCC, not least to ensure that your manufacturer's warranty is not compromised.
See our section on Conciliation and disputes.
For health and safety reasons (and for privacy) a 6 metre separation distance is required between residential caravans.