[Keith]

Western house as it was …..
Was the home of BBC designs department from 1947
until they merged with BBC Equipmeht dept at Avenue House Chiswick in 1987
(Which the in 1993 Mergred with BBC  research at Kingswood  Warren )

Read about its history and achievements
www.bbceng.info 

On a loosely related note does the BBC still have offices on the first couple floors of the nearby hotel (think it's now called Treehouse Hotel)? I vaguely recall back in the early 90s staying in that hotel and the first couple floors were BBC offices, which weren't accessible in the hotel lifts.