Radio Central Exchange Ltd had offices at 10 Market St Pontypridd. They ran a radio relay service. On the roof balcony are, amongst others, Joan Satherley (secretary) and Jack Rees (engineer). In 2011 this building housed the offices of The Pontypridd & Llantrisant Observer. David Morgan, the Grocer was at 11 Market St. The photograph was taken on 5 May 1935. see photograph 31666