The worrying thing is that, as you say, there are several competing consortia which is good for competition but it will probably mean the UK will end up with a range of different reactor designs rather than one or two standard models. This will cause problems for fuel manufacture, operations, staff training, ancillary equipment procurement and so on.
The existing French reactor fleet is mostly a standardised M910 design with some tweaks here and there -- they're in the process of replacing a lot of steam generators in a fleet-wide mid-life maintenance operation and they've been able to pre-order more than forty identical steam generators to be manufactured in a rolling contract, meaning big savings and some flexibility in the replacement tempo.
In contrast the UK is planning to build a couple of EPRs, some first-of-their-kind ESBWRs, a couple of AP-1400s and maybe even some Hualong-1s, the Chinese home-sourced reactors (based on the ACPR-1000 design which has its roots in the French M910 design). That means mid-life kickers in thirty or forty years will be a dog's breakfast of replacement hardware, different for each class of reactor.