It changes every 5 years as regular as clockwork
Then there's even less excuse for the CAA to be out of date with their own website. If they know it's going to change then they should fix it.
I hear - from various staff at Battleship House - that Lasors is garbage as it's full of mistakes, the ANO is wrong (as it contradicts itself and is, therefore, garbage) and now their own website is garbage (and they know about all of them).
So if every publication they produce is garbage how can anyone be expected to get things right?