Can only suggest doing a quick re-scan to make sure the channel details have not changed (there was something in your logs I think about tuning details having changed).Cheers for the feedback. I completely understand that you can't support MDAPI, although both SD and HD were working fine before the TV Server re-install (albeit with stuttering in HD) and SD is working perfectly at the moment, so I doubt it's anything to do with MDAPI itself.
I tried recording and it appears to have only recorded the audio track (I'm in work so can't actually listen, but it plays in VLC and in MediaPortal as an audio file).
If the video is not being captured there we are a little stuck as you can't test BBC HD without MDAPI and we can not confirm a bug in MP with it enabled.... I take it there are no HD FTA channels on cable are there?