I was watching Strictly - It Takes Two this evening, and saw a promo clip for 'Movie Night'. Looks like they filmed it at Horniman Gardens! Don't know when, but I'm gutted I missed Kevin!
Haha! I'm glad I spotted this post - it was on August 23rd (that sweltering Sunday) - we watched scenes being filmed firstly on a picnic table opposite the Dutch barn, and then by the bandstand as the sun was going down. There were many many retakes partly due to hazards such as Kevin skidding on the popcorn that had fallen out of his hair (no doubt this'll make sense in the context of the programme ), being chased by wasps and having to jump cleanly up on to the table!