You haven't seen that many publicly funded technology projects, I take it? GDS are a monopoly, and the govt don't care about using what they're making - they're just going through the motions, spending the money.
So, while this is notable from a technical pov, don't kid yourself that this'll be anything other than a billion pound cash cow for the nepotistic web of government.
How's that nhs digitisation (NPfIT) going? Oh, it isn't?