10mm swa to 10 mm twin & earth connection

[brightspark]

If you're terminating swa to connect onwards to other cable types then a box with some sort of terminal block is the way to go. Wiska plastic boxes come with a terminal block and can accept swa glands and glands for t&e. https://www.tlc-direct.co.uk/Products/WK1010G.html

t you can get much cheaper ones for about a tenner and just as good