Mixer shower cartridge replaced on Bristan thermostatic shower

We work in Telford & Wrekin and the following areas: Telford, Dawley, Donnington, Donnington Wood, Hadley, Ketley, Madeley,  Muxton, Oakengates, Priorslee, Stirchley, St Georges, Trench, Wellington. Coalbrookdale, Crudgington, Edgmond, Hire Ercall, Ironbridge, Jackfied, Newport, Church Aston. Lonford, Roden, Tibberton, Wrockwardine.  “Author: Lawson David”