Impressive detail! Before you figure out who the guy with the yellow tie and the funny socks is, who stands to the next of the lady in blue, allow me to voice a tiny, tiny doubt. It looks so close! But then – there are two incy wincy details that puzzle me:
The openings in the bow! Ark Royal had them but they stood closer together – they looked more or less like one with a traverse in between.
And I think Ark Royal was launched with her catapults in place and I think they did overhang the flight deck a wee bit!? No sign of a catapult here!
It is not a Colossus for it has three bow anchors.
But it is British and it is big. For these two features I would throw a member of the Illustrious class into the ring.
I admit that is far less precise than Ulrichs suggestion but may be closer