With the cambelts done, I could now fit the PAS pump and drive belt. I replaced all of the belts with new ones - Cambelts, PAS, Air Con, and Auxiliary (alternator / water pump):
I spent some time setting the tension but as I did not have the right tool I just had to base it on what seemed sensible to avoid slippage.
I reinstalled the air con pump, installed and tensioned the belt, and reconnected the electricals.
Here's another shot of the whole front of the engine (air con belt not fitted at that point). Looking a lot tidier than it did when I took everything apart.