On Saturday I took the rib tour from Lulworth and on the way back happened to see a couple of climbers on the arches and snapped a couple of photos. One guy was going alone wearing a yellow t-shirt and two guys with their tops off on the next arch along. Time was 11.58 according to the camera. No idea of routes.
If the description matches you send me an email and I can send a photo to you! It is from pretty far away though so you can't really make out faces but it might be nice anyway.
Post edited at 21:35