Had a Domino's at work a few weeks back, courtesy of some labour agency visiting site, was far better than I remembered it previously but not a patch on somewhere like Pizza Express, though I wouldn't expect it to be.
Don't really go for pizza as a takeaway option generally, unless you can guarantee it's going to be warm then it'll just be a disappointment, but would go for Papa Johns over Domino's if had to choose between the two. Co-op do a decent pizza but cooking one at home in a conventional oven is never the same as one done in a proper pizza oven, doesn't even come close.