It does, and I almost suggested it for that reason. However, there is no way of using it for the OP's application (even with linking pairs of terminal strips) which doesn't involve putting two conductors into at least one of the terminals.
I've got a 20a 4 way junction box and some 2 core flex so now I just need to wire it up I'm not too bothered about complexity I just want to make sure it's right and safe
well a 20A round JB is fine, but it's much bigger than you need it to be (physically) a 6A round JB is tiny in comparison and does exactly the same job
... If you use any sort of JB like those above, you would need to clip each of the cables to the wood, to remove any risk of them being pulled out of the JB.
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