New boats don't need to be surveyed. For used boats, you'll need a current out-of-water full condition survey and valuation, commissioned by you and undertaken by a marine surveyor. Always make sure your surveyor is of good standing and has professional indemnity insurance.
Normally, we only require the vessel to be fully British registered under Part 1 of the Merchant Shipping Act if it's to be kept outside UK waters; or if the level of advance is more than £100,000. For customers living in Scotland, we require Part 1 British Registration on all advances.