The reactor is still to be developed by Rolls Royce, which is hidden in mid article. The don't have plans, not even a working prototype yet, so expect delays to at least the mid 2040s.
Step 1: Find and reserve site of nuclear plant
Step 2: ???
Step 3: Power!
The gist of it is, the reactor is a 500MW pressurized water reactor, Gen3/3+. Not any fancy new Gen4 thing that you usually hear about when talking about small modular reactors. No molten salt, no high temperature gas cooling, no weird moderators, no heap of crumbling carbon/uranium spheres, no liquid lead/bismuth/natrium, no thorium.
So I guess it could actually be possible to keep that timetable, because it is actually old, boring and proven technology, just a little smaller and maybe more prefabricated than the usual 1GW to 1.5GW PWRs that were built in the last 4 decades.