I used Carpet Right and found them absolutely, utterly, 100% disastrous from start to finish.
Their customer 'service' is appalling - lost orders, claims that we never ordered anything, missed fitting dates, wrong carpets brought by the fitters one time, no grippers brought another time, etc. On the day things were finally in order (as a result of constant calls to remind them and urge them to double check their stocks and appointment book) the appointment to start fitting was agreed for 10am.
Fitters finally turned up at 8.30pm. Of course, they didn't bring any underlay, claiming there was no record of our order, despite us having ordered it at the same time as the carpet. Cue mad scramble ringing every fitter in Dublin, fitters disappear for an hour to retrieve what was in fairness a better underlay than the one we ordered, and finally left us at 11.15pm! Believe me, I could go on.
Google for problems with Carpet Right (something I should have done beforehand) - you'll find plenty of hits.
Bottom line - you may save a few bob on their carpets (although you get the quality you pay for, I am happy with the quality of mine) but they are the most chaotically disorganised people I have ever encountered.