NB – I have where possible given the dimensions of the studios. This can be a bit of a minefield. The BBC’s studios, Fountain, Teddington, Riverside and even Pinewood TV all had their plans drawn in metric 50:1 but for some reason The London Studios (LWT) still used the 1/4 inch to the foot scale until 2014. This slight but significant difference could cause problems if a set moved from one studio to another with plans of a different scale as it might not fit. Fortunately, they did then issue 1:50 plans although the studios themselves were still marked in imperial feet.
Also, for marketing purposes the size of a studio is often quoted wall to wall. However, most of them have fire lanes running round each side so the available space for cameras and sets is somewhat smaller. Where possible I have quoted sizes within firelanes and in feet or ‘metric feet’ where applicable. This curious measurement was adopted by the BBC and is 30cm in length. (If you think back to your old school rulers, they had 12 inches on one side and 30cm, which is very slightly less, on the other.) It does mean that a studio that is marked as 90 metric feet long is actually 88ft 6ins long.
Most TV studios have their length and width within the firelanes clearly marked along the walls and/or on the floor in feet or metric feet or metres in newer studios. This enables the scene crew to put the set up exactly where it was drawn on the designer’s plan. This very useful facility is never seen on film stages which, incidentally, are always still measured in feet and inches.