The type of survey you choose will mainly depend on the age of the house, as older homes will need a more in-depth structural assessment.
As an absolute minimum, you will need to have a Valuation Survey done for your mortgage company using their surveyor. But remember this is only really to confirm the value of the property and not to identify any hidden issues that it might have. You could choose to use the mortgage company’s surveyor to conduct more in-depth surveys, or you may prefer to appoint your own.
Also consider asking for recommendations from friends, family and colleagues when choosing your surveyor – it’s important your surveyor is fully-qualified and trustworthy as they’ll be identifying any potential issues