Help with wiring an electric oven after moving it to be underneath an existing electric hob (UK)
At the hob location, disconnect the existing single cooker outlet connector. Loosen the terminal screws, withdraw the wires, undo the screws at left and right and pull the connector plate forward.
At the hob location fit a dual outlet connector
https://www.tlc-direct.co.uk/Products/AA45DCOP.html
Available from any good electrical supplier.
over the existing flush back box. Reconnect the hob wires, connect the oven wires, put the cables through the cable clamps.
At the previous oven location, re-use the single connector from the hob to terminate the feed cable, putting the cable through the cable clamp. Fit the connector to a single surface back box screwed to the wall. Label it as being the cooker circuit.