If you wash your uniforms on the hottest wash possible, this is sufficient as well as the drying process too. If this is carried out in the practice, the registered manager has the responsibility to ensure records are kept for the use of the machines, audit and risk assess such as legionella, fire etc., especially if the dryer is kept on when the practice is empty. The costs involved means sometimes is actually cheaper to send out to a local dry cleaners. There is also a benefit for the Directors regarding tax. Of course, there is a benefit for nurses with a refund of tax if you clean your own uniforms at home. After all, it is the registrant's own responsibility to ensure they wear their uniform in a clean and neat way. In standards set out by HSE, as well as HTM0105 and GDC standards.
I hope this helps.