Buying the valve, head and rail separately is a faff. A complete system arrives matched, so nothing clashes. Choose a concealed shower system with the pipework hidden behind the wall, or go for a shower system with slide rail kit if you want the handset adjustable for the kids. Round or square shower system to suit your suite, chrome or a black shower system for something bolder — the BSUK Nero black shower system is our pick. Bathroom Shop UK.