Electric Freestanding Cooker (Stove/Oven): Installation Enquiry (Replacing Existing Electric Cooktop - Do I Need Electrician?)

I am looking to replace our existing freestanding cooker (stoves/oven) with a new freestanding cooker.

Dimensions are perfect so it should slot in fine however I am just not sure about the connectivity; does it need hardwiring hence electrician service is required?

In all honesty, I have not checked what we have at the moment as it seems all of the wiring/cables are concealed very well behind the freestanding cooker.

I was hoping it would be just that plug and play to the wall socket kind of thing.