Ford Fiesta (UK Question) 1998 reg (S) Brakes problem?

master cylinder no not if matser bad you have not brakes or you have to keep pumpingh to stop ..if you replace the brake caliber should have fix it so is it same wheel or wheels then theres a blockage or a inline control block stopped up its where all your brake lines run into that controls flow to each wheel so done get more brake pressure than the other really sounds like you need a better shop