This clip comes from The Benny Hill Show, which as you'd expect has a LOT of bum patting and appreciation of the feminine posterior. This particular clip comes from Series 14, Episode 1 from 1983 and is part of a musical number sketch (of which most of the revealing parts of that can be found on the Benny Hill thread here:
https://forum.oneclickchicks.com/sho...9&postcount=48). This sketch sees Gilian Adams stood on deck looking out to sea, her bottom bobbing along to the music, when Jackie Wright comes and stands by her. Then a beach ball smacks her on the rear, she turns and looks at Jackie and slaps him before turning back to sea. Then along comes Benny Hill to pick up the beach ball, gives Gilian's bum a good few pats before tapping Jackie on the head a few times and walking off. Seeing how brazen Benny is, Jackie chances his luck, gives her bum a few more cheeky pats and when she goes to slap him again he smacks his head with a smile, knowing that those slaps were worth getting to touch up Gilian's bum!