kitchen

I have to replace a fridge/freezer in my kitchen. The oven is next to it and is a bit old. I wonder about the conformity of the electrical connections behind these cupboards. Can anyone can recommend a company that could just re-do that wall of the kitchen (for instance in a contrasting colour), install new applicances, and ensure electrical wiring/plugs are safe. I think Brunyzeel might do that, but would welcome any recommendations. Many thanks!