On 20/01/2017 19:43, Roger Hayter wrote:

The danger it seems to me is someone in the future changes it back to a
45A MCB for a cooker without removing these spurs they will not be
properly protected.


That's their problem.

If they cannot spot a couple of 2.5mm T&E cables from the junction box
they connect the cooker into then they should not be doing the job.

--
Adam