Harty was a daily tea-time talkshow which was broadcast on BBC1, UK from 28 October 1980 to 2 April 1983 and consisted of 116 episodes in total.

Björn and Tim Rice were interviewed by the late Russell Harty about Chess and Elaine Paige performed Nobody's Side. It was the first glimpse/hearing of one of the new tracks from Chess.

Other guests on the show were:

1. Candice Bergen
2. Dr Jonathan Miller
3. Satchmo All Stars 
4. The winner of "Superkid '84" announced by Floella Benjamin.

Dr Jonathan Miller was promoting a new pop-up book about the Facts of Life which Russell gave to Björn to flick through during their interview!

Director: Ian Hamilton
Producer: Gutteridge

Björn would have briefly met Russell Harty in 1978 when he presented ABBA with a TV Times Award.

NB. Russell Harty died in 1988.

Click here for a TV listing from Leidse Courant - 15 October 1984, p.11. 
Note that the timings would be in CET and therefore the time in the UK would be one hour earlier.

Björn - who looked possibly the most fantastic and most handsome I've ever seen him!

Harty (Frida - Time), 1983;
Harty (Björn), 1984;

Date information from Polar Star.  Thanks to Jozsef and to Ken Griffin c/o ABBAMAIL (no longer online).
YouTube link c/o operathephantom