I personally go to the Watford one, they say it's a lunchtime special but I get it anytime. The site says £3.99 but in the Watford one it's £2.99. I specified Watford incase it isn't everywhere else. Great deal, very filling! They have Chicken Tikka as a topping goddamnit could it get any more delicious??
Oh and those who have never tried Tops Pizza, it's really nice! Cheap + delicious!