I´m neither under NDA, nor have I played the alpha:
So my wild guess is either
- no Sniper counter,
- or a weakness to flamer pioniers and mortars and maybe Paks. It´s no secret they have emplacements,
- or difficulties to fight weapon teams such as MGs and mortars due to a lack of early artillery.
Warm or cold?
Close, but their main weakness is missing. Think more globally about how Relic should design Brits to complement weaknesses and outweigh strengths of current allied factions in team games and you would find answer.