Probably follow the advice of your solicitor on this one as is dependent on the property. The only time I had a "proper" survey done was when I was moving into an 18th century cottage and wanted to be sure the thing wasn't likely to collapse (guy who did was an absolute t**t who arrived in a three-piece suit and got huffy when I demanded he go into the roof space under the thatch with all the spiders. I digress). Depending on the leasehold arrangements, you might not be liable for structural issues in the building which would then be a "what's the point of a survey then?". There's so many types of survey you can do, and if it's not required, then i'd put it back in your court re: peace of mind for yourself.