I remember having the TV21 comic in the late 60s. It had a lot of Gerry Anderson's work in it like Thunderbirds, Captain Scarlet, Fireball XL5 and Stingray. I presume it was set in the 21st century and had stories from the above TV shows. I think that it was later merged with the 'Valiant' Comic.
Do You Remember TV21?
Do You Remember TV21?