Best place to buy high pressure fuel pump?

[New2ds4]

As the topic says can anyone suggest where I can source a high pressure fuel
Pump for my Citroen ds4 200thp for a reasonable price?

Also anyone suggest a Citroën diagnostic specialist in the Leicester area would b great thanks

Thanks guys appreciate the help!

[Gibbo2286]

First question do you really need one, they're often mis-diagnosed?

[New2ds4]

Tbh I’m not quite sure need to find someone in Leicester who can do a pressure test on low pressure pump and at the rail as when I first start the car it hesitates but after a rev it idles but the engine management light is on and won’t rev Over 4000ish a generic code reader comes up with p0087? I’ve had the fuel pump refurbished about 6 months ago with the same problem and it has now come back any ideas on what to check first?