Yes, i'm pretty sure that's the clip I was thinking of, John! So no further clue as to origin then?
Interestingly, they were only in Sweden for less than two days, and this 'diary' of appearances lists nothing for Swedish TV, but it DOES for How Late It Is:-
"" 01/03/1969 Fishmonger's Hall - London, England
02/03/1969 Van Dyke Club - Plymouth, England
03/03/1969 Playhouse Theatre - London, England (BBC)
05/03/1969 The Locarno - Cardiff, Wales
07/03/1969 Hornsey Wood Tavern - London, England
10/03/1969 Cooks Ferry Inn - Edmonton, England
12/03/1969 Leicester University, Leicester, England
14/03/1969 Stockholm Konserthuset - Stockholm, Sweden (afternoon show)
14/03/1969 Uppsala University - Stockholm, Sweden (evening show)
15/03/1969 Teen Clubs Box 45, Egegaard, Skole - Gladsaxe, Denmark (afternoon show)
15/03/1969 Brondby Pop-Club, Norregard Hallen - Brondby, Denmark (evening show)
16/03/1969 Tivolis Koncertsal, Copenhagen, Denmark (2 shows)
17/03/1969 TV-Byen, Gladsaxe, Denmark (Danish TV)
21/03/1969 "How Late It Is" - London, England (BBC TV)
22/03/1969 Mother's Club - Birmingham, England
24/03/1969 Cooks Ferry Inn - Edmonton, England
25/03/1969 British Supershow - Staines, England
28/03/1969 Marquee Club - London, England
29/03/1969 Bromley College of Technology - Bromley, England
30/03/1969 Potter's Bar - Southall, England
01/04/1969 Klooks Kleek - Hampstead, England
05/04/1969 Roundhouse - London, England
08/04/1969 The Cherry Tree - Welwyn Garden City, England
12/04/1969 Toby Jug - Tolworth, England
14/04/1969 Stoke-On-Trent, England
17/04/1969 Sunderland, England""
Would they have had time to go to a TV studio in Sweden to do a TV show (it would have to be 13/03/69)
? I think it unlikely!