When you instructed your solicitor, did you not receive an information sheet or pack outlining the simple steps in this process? I thought these overpaid people had to do it these days. It is certainty good practice.
In simple terms, whilst the vendors solicitor is preparing the contract document for signature, your solicitor should have undertaken local and other searches on your behalf. There are some elements of choice about these, especially as you are a cash buyer (building societies insist on having most optional surveys).
Do not be fooled into thinking this is lots of hours work he is doing. It is about six hours work in total spread over several weeks, the gaps being caused by waiting for information to come back.