We have used these twice and both times they faile...

We have used these twice and both times they failed to deliver. On the first occasion (in 2015) they sent someone who was ill equipped to do the job, and we incurred additional expense, and considerable lost time as a result. The second time (2017) the plumber couldn't find our house, or a mobile signal and left us hanging around for most of the day. We then had to find someone else, resulting in lost time and additional expense. To be fair the people on the phone were fine, but clearly the company are, in my experience, not worried about using inadequate tradespeople. If they can't solve the simple problem of finding my house then why would I let them loose in my kitchen? If you do choose to use these then have a backup plan. Overall a very frustrating and disappointing experience.