From 1979: The British Marvel Bullpen Bulletins page plugs the delights of Dez's TV HEROES, a STARBURST-alike which intended to expand the franchise to cover general small screen shenanigans.
The project never progressed beyond the pilot (a familiar TV tale) which either means that sales and trade reaction was stunning enough to make it viable. Or the British Bullpen concluded that the amount of effort involved in putting together another magazine (or top of the weeklies and monthlies) just wasn't possible.
There's also another plug for FOOM issue 23... another much-hyped project that ultimately failed to fly.
This appeared in MARVEL COMIC issue 344 (30 May 1979).