Sometimes its not the rifle, or other equipment, its strictly the soldier, meaning no matter how they are under equipped, under gunned, out gunned, the soldier prevails against far superior odds.
Since we are talking about the British, the best example I can think of is the British RAF in the Battle of Britten.
Churchill said it best, I don't have to repeat it.
Bastonge was another example but they were American Paratrooper.
You can't credit individual weapons with the winning or loosing of any wars.
It was the British RAF crews that won the Battle of Britten. It certainly wasn't because the RAF had better or more aircraft.
The 101st at Bastonge would have done the same job if they had '03s instead of Garands.
Can't discount the individual soldier.
CPT USAR Ret
USAMU Sniper School Oct '78
Distinguished Rifle Badge 1071