We did this and it completely screwed up the whole mortgage.
What we didn't appreciate is that the solicitor you appoint also acts on behalf of the mortgage company.
Our level 3 survey was overall pretty good, but showed one area of damp. There was no rising damp or anything of concern, and the cause of the damp was suggested.
There were a few technical suggestions re checking dates etc, and our solicitor asked for a copy of the survey. Stupidly, we just sent it on, thinking that the solicitor was only acting for us. Didn't realise that the solicitor was also obliged to protect the interests of the mortgage company.
At the last minute - just before we're due to exchange (two months after the survey had been sent to the solicitor) - the solicitor tells us that she is obliged to share it with the mortgage provider as there's a reference to damp. We were told the mortgage wouldn't proceed unless the survey was shared so we had to consent. Even then, we didn't think there would be a problem as the surveyor wasn't concerned about the small area of damp.
The mortgage provider - Barclays - then decided it needed its own survey done because of the damp. Even though we had a proper Level 3 survey, we were only borrowing around 33% LTV, and the damp area was small and confined, Barclays still wanted its own survey done. Except there wasn't time for one to be organised because our buyer's mortgage offer was about to run out and due to interest rate changes, they wouldn't be able to get a renewal.
To cut a very, very long story short, we had to proceed without a mortgage - luckily we were in the position to be able to do so. The mortgage was required as the property was being bought for DM and me to split the house into two and create an annexe. So no mortgage meant we couldn't do that. It was an absolute bloody nightmare.
And all because we sent the survey to the solicitor. So personally, no, I'd never do that again.