Jolly Hockey Sticks Part 4. The fourth part of the St. Trinian's themed films is the first to be shot in colour, and also the point where someone should have realised that this series had run out of steam. Based on Ronald Searle's demonic schoolgirls, this outing cribs off of the topical Great Train Robbery of the 60s, retains George Cole as a reassuring presence, while adding Dora Bryan and Frankie Howerd for some acting solidification. It's not a bad film as such, in fact the last quarter, where a whole host of train shenanigans come into play, is great fun, it's just that it feels tired, less risky, like the makers were hedging their bets to get a box office winner (which came to fruition). Fast framing is a bit of a cheat, Howerd is wasted - or sleepwalking through the film? But Bryan is on hand for a bit of quality while the girls are all boisterous and minxy. Enjoyable enough for those so inclined, even if it's utterly forgettable come the final credits. 6/10

Though George Cole stayed put as the wily "Flash Harry", the stylishness and mischief of the Sim/Grenfell films has been replaced by the more crass, innuendo-laden and colour performances from Frankie Howerd and Dora Bryan. Raymond Huntley ("Sir Horace") is the government minister who decides to allocate £85,000 to locate the ailing school and to keep it up to date with the times. Thing is, it's headmistress "Amber" (Bryan) is his bit-on-the-side and she uses the cash to ensure the school becomes little better than a state of the art gambling facility that wouldn't have looked out of place in Atlantic City. Unbeknown to them all though, the old building in which their school is now housed has already been used for a nefarious purpose by some train robbers. Needless to say, they want access to their ill-gotten gains hidden under the floorboards - and when the unruly girls get wise to their plotting, shenanigans galore ensue! Bryan and Howerd both have good comedy coming and a degree of chemistry, but the latter is too domineering as an actor and as character - and as I was never really his biggest fan anyway, I found he rather robbed the thing of any subtlety or hint of comedic sophistication. If you like, "St. Trinians" is now steaming towards "Carry On" territory and leaving behind it the charming boisterousness of previous iterations. It isn't terrible and some of the humour is still quite perky, but these have run their course now, I'd say.