This isn't news, it's an issue that is years old now.
My best friend is in 2 Para, they don't even use the SA80 anymore because it was so unreliable, even after many "rebuilds". The General in charge of the Parachute regiment was relieved of command he put up such a pisser of a stink over the SA80 a while back.
When my pal was in Macedonia, he carried captured Soviet block weapons like the AKSU or RPD lmg when he could, he so distrusted his own rifle.
Now they are using M4 variants usually when deployed last I spoke to him.