In reply to Jon Read:
I have no idea I'm afraid. I'm sure someone on here must have asked them though.
I know EU cam manufacturers won't re-sling cams past their arbitrary sell-by date, or cams made by other manufacturers, because the regulations around PPE mean they can't offer a warranty on the sling alone. (As opposed to accepting some responsibility for the cam itself still being sound as well.)
Also Wild Country will no longer re-sling their cams even if they're basically brand new, because they're not a proper gear company any more.
If you were thinking of sending your cams off on holiday to the USA anyway though, there are companies over there happy to re-sling any cam for a fairly modest fee. Those PPE regulations might be a reason not to do it for professional use or club kit, but with your personal gear it's your rules. The service is probably cheaper than the postage.
eg: https://www.mtntools.com/cat/rclimb/cams/mt_camresling.htm
They'll even sling some bits & bobs that never had a sling in the first place. Brand new dyneema sling on your lucky antique MOAC anyone?
Post edited at 11:38