by Mr White »
Wed Jul 03, 2019 10:01 pm
Sorry, I do not quite understand what you want to do. (Other than move the cooker)
When you move a cooker, you can do so by extending its cable with the same size cable, and a suitably sized junction box. This junction box cannot be hidden. (And is somewhat obtrusive, since it has to be able to carry 30A)
The best option would be to install a new 6mm cable from the new cooker position back to the consumers unit, disconnect the existing cable, and connect the new cable. (Testing is a foregone conclusion)