OTOH, if it's just twin & earth under the floor/in a ceiling, and you're looking for a compliant solution, just bung in Wagos or Ideals etc, rather than faff about filling a screw terminal JB with Play-Doh or whatever.
If you need to find a tradesperson to get your job done, please try our local search below,
or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Please select a service and enter a location to continue...
Are you a trade or supplier? You can create your listing free at DIYnot Local