Britain not getting the M55, but every other allied country does

[сибирскиймоскаль]

Why does every other allied research tree have the m55, but Britain doesnt. I know the m44 is good but i still believe that britain should have the m55

[Normandy_Corsair]

[сибирскиймоскаль]

Oh, Thanks

[Caernarvon02]

we didnt use it.