Tallis' Spem in Allium and Nonsuch Banqueting Hall?

My son is writing a paper for a graduate course, and we cannot find some material that I *recall* seeing somewhere. This was a CGI of the imagined interior of the banqueting hall on the grounds of Nonsuch Palace - where this piece was purported to have been premiered. I seem to recall singers in period dress being Photoshopped into the various 32 balconies. I am thinking either a Howard Goodall "Big Bang" Episode1, or the Kings' Singers *making of* show - or a period drama like something on BBC. If anyone has a recollection of this - or has either excavation diagrams OR architechtural plans, real or imagined, please let me know. Thank you.