Inn Quiz was a local programme so may not have been included in the archive. In fact I'm pretty sure Meridian acquired non-network programmes.
I'm vaguely aware that Meridian acquired local current affairs programmes but did they really acquire EVERY non-network programme? These included coverage of prominent local events, such as Tall Ships' Race, and a few children's programmes, such as Radio - a drama set in a radio station. Was The Real World networked or was it only shown locally?
What about documentaries produced for C4?
I think you ought to check their catalogue, think you'll be disappointed.... not even any Inn Quiz!
I have already checked the online catalogue but past experience has told me not to automatically trust online catalogues. Archives and museums often have other stuff either not yet catalogued or not listed in public catalogues.