hard wired oven

I took delivery of a new dual fuel range cooker today to replace my old built-in single oven. However, I want to see if I can hook it up to the existing circuit, as given everything at the minute, I can't get (or rather don't want to get) an electrician out. Here's what I currently have...

Hi everyone, I was wondering if someone could give me advise on this issue. I brought a 3.6kw Combination oven from ebay, used. It had a plug on it so I just plugged it straight into the socket behind the unit and it powered up fine. After a while I read through the manual and it states it...