Avoid Redrow! I've bought a new-build from them, and the quality of everything is terrible.
To begin, let's talk about their finishing: when we came to look around our finished place before moving in, the finishing was non-existent, and we pointed this out, to which they replied "oh it's like that in all of our builds" - they had to do something about this, and did so poorly.
Next, I'll mention the in-built appliances: this build was advertised as luxury, but the appliances said the exact opposite - all the energy ratings were terrible, and if you looked up the price of everything you could see it was on the very cheap side - the freezer was not frost-free! In the beginning, our fridge didn't cool properly, and an engineer (from the fridge company) determined it was because it was thrown around, then turned on too soon after putting it there - this was from someone from Redrow or their building team, and just an example of their incompetency. The fridge company said we can't replace it with a new one, it would be refurbished, and when we told Redrow customer service of how unacceptable this was, they were unready to do anything about this - eventually after a couple weeks (in which we had to suffer without a fridge) they decided they would swap it out with a new one from one of their other properties.
The builders and commissioners were clearly incompetent, we had a big leak at the start (which we luckily caught straight away), and multiple minor ones after that, which is something you would not expect in a new build. Whenever we reported something like this to the Redrow customer service, they would play us around and not set a date for their plumbers or engineers to come, and would take forever in getting back (even though that was their job) - I will mention that these plumbers and engineers were still all on site, but the customer service people would still take many days or even weeks in some cases. One time, because of a leak in the kitchen, we had to check under the panels on the floor and dry up any water there, and we found trash there from the builders - this was a place that they thought we would never look, and just decided they would leave it there (and I do recognise this is not directly Redrow, but they do have to pay attention to these things when they commission - after all, they are the ones selling the house, and are to blame).
After a year, we're still finding new problems (especially those which would arise from poor workmanship and would be covered up temporarily) - the customer service is really terrible, and they would literally stall and play us around and end up not doing anything, after wasting hours of our time (which also meant that one of us would have to miss work and wait around for them). They have now got their money, and know that we can't really do anything - and I will say that I've spoke to neighbours, and they have had and are having countless problems too, and the same experience with Redrow not doing anything.