Thanks for all the comments - I decided to create the site as I struggled to find any information on these early airband radios. The only site that seemed to list anything of interest was radiomuseum.org and then other sites started from the early digital radio's such as the Signal R-532. But these came out 25+ years after the vintage radios!
I think that Teleton is an AB 21 - they were £34 in 1969, which in todays money was around £479
http://www.airband-radio.co.uk/wp-co...448-scaled.jpg