It sounds as if you have already spoken to them but have a look on the CAA SRG website. Try this link below:
SRG Licensing
I don't know whether there is a spicific document regarding your issue but hopefully this will be of some help. My recent experience of SRG is "No, now what's your question"!
[ 15 November 2001: Message edited by: Whipping Boy's SATCO ]