Here are a few extra things I discovered while making this pizza:
i) I ended up with quite a lot of liquid leftover from the initial recipe so just chucked in some extra flour and made more dough. I split this into individual portions and put it in the freezer (in some well oiled freezer bags). I defrosted the dough in the fridge overnight when I wanted to use it, and it the next day it was perfect to roll out . Thanks to Deepa for this tip.
ii) I found this dough quite sticky, so you'll need a well floured board and hands to roll it out.
iii) I didn't heat up the tray the pizza went on, but did pre-heat my gas oven on the highest setting for about twenty minutes and put the tray on the highest shelf in there. The pizza took around 10-15minutes to cook.
So in conclusion, there are times when you wonder if it's worth making something at home that you can easily buy in the shops, but in this case it is definitely worth it. The recipe is simple enough to make as a quick post-work dinner (even with the proving time), and you can choose whatever you want as a topping- bonus!