I finally managed to upload the videos I made of Arthur the day after I got him (20th Dec). I plan to make more! Nowadays he is a little more comfortable, and lays his little head on his front paws for nose-rubs. Apparently I am a good bunny climbing-frame too.
My clever boy has also managed to litter-train himself - he still poops a little (dry ones) and leaves a couple of cecals in a few places but all his pee is in the litter tray. I am surprised, as he is only about 9 weeks and obviously unneutered. I know I am very lucky!