Thank you for showing us that image. It's a GPO 700-series junction box (dating from the 1959 to 1981 time frame). Here is my reading of the wiring --
(a) Right hand side, screw terminals numbered 1 to 4, from the top:
No. 1, solid orange wire, incoming A-wire.
No. 2, solid white wire, incoming B-wire.
No. 3, unused.
No. 4, it is not clear if there is a wire connected at that screw terminal. Would you please check and if yes, report its colour and with which cable it is associated.
(b) Left hand side, screw terminals numbered 1 to 4, from the top:
No. 1, solid brown wire, white/blue wire, the respective A-wires to the sockets, should be connected to IDC5 (or equivalent screw terminal) at each.
No. 2, solid blue wire, blue/white wire, the respective B-wires to the sockets, should be connected to IDC2 (or equivalent screw terminal) at each.
No. 3, it is not clear (as 4, above)
No. 4, it is not clear (as 4, above)
So, as previously suggested and dependent upon your rechecking of the above, you could disconnect the solid brown, solid green & orange/white wires within that junction box, coiling them neatly out of the way and ensuring that the bare conductors do not touch each other or the terminals.
At each socket, you should then disconnect the solid green & solid brown wires and the orange/white & white/orange wires, if connected. In essence, you should just have the solid blue & solid orange wires from the left hand cable connected to IDC2 & IDC5 of the socket, to which it feeds and the blue/white & white/blue wires from the right hand cable connected to IDC2 & IDC5 of the socket, to which it feeds.
