I've been here twice now, both times with mixed veg/omni groups, and the Cornish Arms probably the best place I've been to in terms of accommodating such a group. So many vegan options, but the basic-food-desiring omnis had no cause to grumble. Each time, everyone enjoyed their meal.
The meat loathers pizza was good, but I've made better at home quickly and easily using a pre-made crust, BBQ sauce and a few types of mock sausage/peperoni + Notzarella. The BBQ chicken wings were scary good. I would personally have preferred them if they were shaped a little less like wings...
The first time, I followed the advice from the waitress, and ordered the Double Down. So much fake stuff! The potato mash and gravy was great, the slaw was excellent ans was also IMO necessary to break up the heaviness of the rest of the meal. The double down itself was quite something. Two "chicken" fillets in a spicy crumb, facon, only moderately nasty fake cheese (I have yet to find one that I like though), iceburg lettuce and tomato (I can't remember the last time I had iceburg lettuce). It was good, definitely some of the best non-sauce-drenched mock-meat I've had. At the same time though, it was still clearly mock meat, and not that great for eating huge quantities of.
The second time, I had the souvlaki. While I enjoyed it, I probably wouldn't order it again.
Despite the novelty of being able to have meals like that, in reality, I would enjoy a meal made with more actual vegetable content. Having said that, next time I end up here, I'll probably fall for the novelty of vegan pub food again.
As for desserts, the cookies and cream cheesecake was a little disappointing, the texture was a lot more pudding-like than cheese-cakey, and needed a bit of tartness to break up the heavy sticky sweetness.
Staff were neither remarkably good or bad. The first time they seemed to ask us if we wanted drinks more often than seemed necessary, and the table we were seated at was pretty small for 8 people. The second time, struggled a bit to get a the attention of the waitstaff.
Also, all their drinks are marked as to whether they're vegan-friendly!
Updated from previous review on Saturday August 15, 2015
Cons: Small tables, Noisy