BBC World Service Letterbox, Hugh Tattersall & Margaret Howard

Margaret Howard took over BBC World Service's Letterbox programme from Hugh Tattersall. Here they are, looking suave and glamorous and cracking open a bottle to celebrate the programme's 10th anniversary in 1975. The theme tune was a lovely piece of Bach
There is  a comprehensive post about Ms Howard at Andy Walmsley's Radio jottings blog plus a 1981 episode of Letterbox to hear: 

which includes an engaging 2010 Vimeo interview carried out by Jonathan Marks