Need help installing a light switch in living room

I’m looking for a handy person to install a new light switch in my living room. The wall is drywall, and the existing wiring is accessible. I have a standard single-pole switch and need it wired and tested safely. I’d prefer someone who has experience with UK/Ireland electrical standards and can ensure the circuit is properly isolated when working. Please include any tools you’ll bring and a quick safety check before finishing. Availability on weekday mornings would be ideal.