Replacing immersion heater stats

Hi all
I work for a company where we do mainly annual gas servicing for social landlords throughout the Midlands, the company are thinking about replacing the immersion heater stats to those with safety stats fitted, not having Part P, or any other form of training for this, the question is, am I allowed to undertake replacing the stats?
Be greatful for any views.

Cheers in advance

Mick

Replacing a stat isn't a notifiable activity under part p so that isn't really a big concern. A bigger issue may be with electricity at work regs, showing your competence etc.
You could do worse than get some training on the subject, safe isolation procedure etc.