Kitchen fitters 'Electrician'

A recent job was to find out why a cooker kept tripping the electrics, we discovered 2 ovens installed on the 32A kitchen ring main, they required a dedicated 20A supply each!
The kitchen fitters 'Electrician' should have known this and the picture is how he had connected it all up, disgraceful.
Sadly this scenario is all to common with unqualified trades carrying out electrical work when they really shouldn't be touching it.