You need to remeber that UKF does not have good mid game vehicle and even 222 can give them huge beating because only option as you can countr is sniper + AT (AC
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They also have expensive infantry that is only good on defence and will loose to lmg grens util you 5th men or weapon racks.
They also does not have grenades until you research them.
Also until you upgrade to 5th man you are weak to double sniper strat or JLI spam.
British also have problems to counter double luchs.
So yes in vacuum they arrive early , but british will never be able to hold 1/2 of map agains good ostheer player . Yes OKW suck right now and need redesing but that is not british problem.
Also as OStheer you can push them of field by mgs (no smoke , weak close range infantry) or more squads and extended tier 1 because british does not have something like t70 whitch you must fear.
Also the suck at clearing building.