Looks like a Papa Johns has just opened in East Finchley, and as an introductory offer they have any XL pizza for £9.99.
Other offers in the leaflet:
1. Buy one get one half price
2. 2 XL pizzas, BBQ Chicken Wings or Jalapeno [sic] bites and Garlic Pizza Bread - £22.99
3. Medium pizza, any side and 1.25l drink - £14.99
This may only be for the East Finchley branch but try your luck elsewhere!
Valid until 21st May