05/01/68 First show: Engelbert,Herman's Hermits,P.P.Arnold,The Morgan-James Duo,The Cedars,Mickey Most and recorded during their pre-Christmas visit to London-The Beach Boys.
12/01/68 Amen Corner,Manfred Mann,Long John Baldry,Kenny Lynch,Marty Wilde,Composer Les Reed and Tony Blackburn.
19/01/68 The Foundations,The Alan Price Set,Julie Rogers,Gordon Waller,Cat Stevens,On Film are Herb Alpert,The Marvelettes,and an interview with Andrew Oldham...TOTP director Johnnie Stewart took over production of the series that tonight.
26/01/68 Sandie Shaw,Eric Burdon,The Move and Danny Williams. There will also be filmed contributions from The Bee Gees and The Buckinghams,as well as an interview with Tony Hatch and Jackie Trent.(Eric Burdon almost certainly did "Sky Pilot" and The Move "Fire Brigade" as both singles were released today)
02/02/68 Shirley Bassey,Eric Burdon (on film)Freddie Garrity,The Casuals,The Eagles and Arlo Guthrie
09/02/68 The Dave Dee group,Gary Walker,Esther and Abi Ofarim,Long John Baldry,The Cowsills (on film)the interview spot was with Tremeloes Alan Blakely and Dave Munden.
16/02/68 Lulu,The Troggs,Frankie Vaughan,Tim Rose,The Peddlers,John Rowles
23/02/68 Val Doonican,Dave Clark Five,Traffic,Cat Stevens,The Paper Dolls,and George Martin
01/03/68 Wayne Fontana,The Alan Bown Group,The Lemon Tree,and The Dalys, guest critic was Norman newall
08/03/68 Spencer Davis Group,Paul Jones,Vince Hill,Adam faith and The New Vaudeville band,guest critic (on film) was Engelbert
15/03/68 The Symbols,Scaffold,Jimmy Young,Lena Martell,The End and guest critic Spencer Davis, plus The Beatles promo Lady Madonna - the promo film - would have been shown in monochrome.
22/03/68 Final Show: Gene Pitney, Procul Harum,The Hollies,The Herd and The Karlins,Paul Revere and the Raiders (on film) the guest critic was Paul Jones
I'm more than a little late to this thread, but I'm intrigued by the listing of "The Eagles" in the episode dated 2nd February. IMDb has assumed this is the Bristol-based instrumental group of that name, who did make some appearances on various pop show in the 60s, but it can't be them in this instance because they disbanded in 1964! However, with all episodes lost it's going to be hard to work out who they really were.