Install electric shower - Plumbing job in Finchley Church End, North London

Job description

Not sure if this is a job for a plumber or an electrician. I need replace an electric shower. The old unit (Triton t80si) stopped working and I imagine will need to be replaced with a similar unit. The plumbing and electric are already there – but the old unit is around 10 years old – so I am not sure if it still complies with current regs.