.....
This pretty much mirrors my experience playing with and against them as well.
Brits crush both axis factions for the first 4-5 minutes of the game. They explode onto the map with no buildings and extra fast cap speed, then win every fight overtuned sections, a stronger starting unit, and the UC for free bleed. Snipers and JLI are the only things that can hurt you at all.
But then they start to falter. Squad weapon upgrades, support weapons, and cheaper veterancy requirements start coming online for the axis factions. Brits suddenly struggle to hold ground, and once they get forced off they lack the tools to retake the map.
While they always start the game ahead, the second they fall off they can never recover. So you end up with this awkward faction design of "take a ton of ground and then bunker up hard."
Random Musings on their problems:
* The Brit vehicle roster is extremely top heavy. There is only one LV, no vehicular arty, and, outside of the Comet, a whole bunch of (at best) 'meh' units.
* The Mortar Pit is ineffective if forced into an artillery duel. Being stationary is a huge disadvantage, making it nearly impossible to use on some maps, and extremely challenging to use if starting the duel on the back foot.
* The vaunted Artillery calldowns are terrible. The smoke has the range of a smoke grenade, but the delay of a mortar barrage, giving it the worst of both worlds. The arty itself is cheap, but again short ranged, making getting to where you need it challenging when assaulting a defended position. The slow arrival and long barrage time likewise mean it will basically never force a retreat, just a reposition.
* Brit anti blob tools are nonexistent. Their MG doesn't do its job, they have no rocket or even tube arty, and there is just a general lack of good AOE tools in the arsenal in general. (Mills bombs being the only exception)
* The snare thing I think is overstated. 2 snare squads is usually adequate for most game modes. Brens being garbage on IS out of cover though really pushes them toward 5 man, which in turn makes maxed out Brit armies feel incredibly small.