Booking appmt was fine. Engineer turned up on time. Spent 20 mins in the house to conclude it wasn't a drainage problem which is what plumber had told us. Didn't lift any manhole covers to check. Said it was due to lack of use of en-suite - water evaporating from the pan. Spent time on phone to try and agree discount against future work - he was recommending a pipework clean. Said we would get a quote for this job but not received. Accounts payable on the phone that afternoon with no recognition of any of the above. So, to date I have paid £144 for a someone to tell me it's something other than the plumber told me but not carry out any work. The engineer was fine, and may well be right, but I just feel that to date we have not received value for money or a definitive result or answer to our problem. Hence the poor rating.