Well done teabag and thanks for saying such nice things about the Dudley videos.
Here's a list showing which clips were taken in which caves. The numbers after the cave name are the clips.
1 Swinsto Hole 1, 42, 43
2 Pwll Y Gwynt 2, 44, 45, 46,47, 48
3 Lesser Garth Cave / Ogof Ffynnon Taf 3, 4, 14, 15, 16, 52
4 Shakespeare?s Cave 5, 6, 7, 8, 37, 38, 39
5 Sidcot Swallet 9, 36
6 Peak Cavern 10, 19, 20 ,21, 25
7 Pant Mawr Pot 11, 12
8 Cwm Dwr 13, 30
9 Fairy Cave 17,18, 51
10 Daren Cilau 22, 23, 24, 31, 32, 33, 34, 35
11 Ogof Rhyd Sych 26, 27, 28, 29
12 Ogof Ffynnon Ddu 40, 41, 49
13 Illusion Pot / Dale Barn Cave 50
Keith