In reply to Kevster:
Really? I’d have thought anyone who climbs S/VS is going to get wet, probably before actually reaching the start, and definitely at that bit later on where they used to swim. It's one thing being taken along it, but I have the impression the OP plans to be alone.
Plus, while I don’t know much about filming, a lot of it’s out of sight of land. You’d need to hire a boat of some kind to film. Seems like a lot of trouble. Having said that, the location is spectacular, but then the climber isn’t actually very far up. These sea-level traverses are a different genre from true DWS.
Barrel Zawn in Pembroke would be another possibility of course. The setting’s lovely rather than spectacular, perhaps, but there’s some easy routes there and easy to film.
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