I think it's the earlier Triumph 1300 as suggested by Jenkins. Some clues in the position of the Triumph badge on the right of the rear panel, and the rear bumper overriders.
I think it's a 1300 too. The registration isn't all that legible but the suffix looks like E which would be Jan to July 1967. The F registration began on 01 Aug 1967 marking a change to UK's registration year which thereafter ran Aug to July.
The 1300 was introduced in 1966 and succeeded by the similar Toledo in 1970. It had a revised nose/headlights but was superficially similar to the 1300 at rear. In a major step back the Toledo reverted to rear wheel drive as per the Herald - the 1300 was FWD.