It might have been different, but probably could not have been.
After the Blue Streak IRBM (liquid fuelled) was axed as a weapon in 1960, it was allowed to carry on as a potential satellite launcher, though officialdom could not see any application (this as Telstar was demonstrating satellites as a means of live intercontinental TV
A plan was approved where Blue Streak would be the 1st stage of a European launcher, France and Germany making the upper stages, with at least initial launches from Woomera.
But, though Blue Streak performed well, the upper stages kept on failing, this with economic pressure led to the UK pulling out in 1968.
We know that France, partnered by Germany and others, would eventually go on to build Ariane.
However, a team offered to make a small launcher, for a knock down price, they were allowed to do so.
In 1971, from Woomera, this Black Arrow rocket, (which could have the basis for UK upper stages for Blue Streak), launched the UK Prospero payload, which is still in orbit and should remain so until around 2040.
But Black Arrow, being so limited, was a dead end, in 1971 there was no market for small commercial satellites.
A decade later, it would be different, but the gap was too great in 1971, still also a economically stormy era about to get worse.
Since then, the main focus has been satellites and science, through the result of a long period of amalgamations at Astrium, and smaller niche players like Surrey Satellite Technology.