https://www.mi6-hq.com/sections/movies/cr_1954
Some nice background stuff.
I've seen a couple of quiz shows where "what was the first James Bond film?" was asked, and the smartypants contestant correctly says "Casino Royale" and argues with the quizmaster after being told he was wrong. "The correct answer is Dr No in 1962".
The 1954 telemovie is apparently missing a lot of footage, and was only recently rediscovered after having been considered lost.