We need more movies like this!

Our cinema is run by Americans that's why.
Look at 633, the star is a Yank but in the book he's British.
We have very little control over our films made which is why you always get the obligatory yank in them.
It's a shame.

The last thing we need is more movies like this. It's like watching an am dram production with lash ups of official RAF promo films from the late 40s. It just doesn't hold up against the better production values of more recent war films; it looks execrable even compared to its contemporaries like The Battle of Britain and 633 Squadron.

The plot is absurdly full of every cliche in the book. If this is the British film industry's testament to real Mosquito crews' celebrated precision bombing raids on Copenhagen and Amiens prisons, it's an embarrassment.

Long story short...

What films get made is all about the financing, where it's coming from, what priorities they have, strings attached etc.

Up to about the 1950s, early 1960s, the UK box office (plus it's empire) was enough to support a proper film industry which could regularly make films which could make a profit without necessarily attracting a US or rest of the world audience. At least up to a certain budget level. This meant that many films were made with little or no obvious US appeal. (Even so, US fading stars were common in even the cheapest UK films.)

US major companies had long been investing in British films and had often owned UK physical studios all through this period but as the purely UK industry declined this became even more vital. Fortunately for the UK, Britain became "cool" in the 1960s after Hammer, Bond and The Beatles so US Majors invested in larger bugeted films set and made in Britain throughout the 1960s.

By the end of the decade though this was tailing off and Mosquito Squadron came at the end of this period as one of several MGM-British knock-offs of it's own slightly higher budget 633 Squadron. (Although their other similar projects had US stars like Cliff Robertson and Lloyd Bridges, David McCallum was, in effect, a US star after The Man From Uncle)
MGM British studios itself closed in 1969 and although they then shared MGM-EMI Studios across the road, their and other US investment in the UK was much reduced for decades.

Any UK film now comes from a house of cards financing package. The only films of any size which don't have a US input tend to be at least partly funded by TV or quasi-government money and they aren't interested in funding anything remotely like a modern equivalent of Mosquito Squadron.
The US money would be more interested in finding a US equivalent, so there's the problem.

God, jeff, were you on drugs? Or have you got irreversible cataracts and earwax?