Through the fifties some of the more innovative and interesting motorcycle manufacturers were the smaller guys who built bikes using Villiers engines. DOT definitely fell into that bracket along with Cotton, Greeves, DMW and several others.
DOT were a brand with an illustrious pre-war history, though never in high volume production. Whereas pre-war DOT had used JAP and Blackburne motors along with Villiers, post-war Villiers was the only real option. The post-war range was more off-road competition focussed but there were road bikes too. The most notable post-war DOT feature was their consistent use of Earles forks.
It's timely to reproduce this brochure now as the brand DOT is currently being revived. There are two models being lauched, a street scrambler and a cafe racer both with 650cc parallel twin motors of Kawasaki design but licensed out to China manufacture. There's a DOT website for further details of the bikes, much is made of the bike's Manchester heritage but the site is written in a strange not quite native English. Whatever the story behind that is, the bikes look good and you've got to wish them success.