In the final weeks of Pebble Mill in autumn 2004, different areas of the building were decommissioned at different times, as technical equipment was transferred to the Mailbox. I suspect that Studio B, the Midlands Today studio must have been decommissioned, leaving the regional news programme temporarily homeless, and having to find a short-term location – the Pebble Mill Conservatory. Hence the need for the notice, asking for quiet!
The Conservatory was originally built for Good Morning with Anne and Nick in 1992.
Thanks to Andy Walters for photographing the sign, and to Philip Morgan for photographing much of the Pebble Mill building, including the Conservatory.