indeed Tjaereborg Holidays had their own brochure in the UK in the 80's and were subsequently bought out by Portland Holidays - the direct sell arm of Thomson's
Panorama was another big player - forget who they usually flew with
Vista jet Holidays tied up with Air Spain when it got its DC-8's and they were a regularity at LTN often with horrendous tech delays -
my first job was with them in 1972 lol