If you are dead set on a ceramic hob, you will need an electric cooker circuit rated at 32A or above. Most houses already have one. There would be a large "cooker" switch above the worktop,and a large plastic plate with a Cooker Connector in the wall below the worktop, where the cooker was expected to be.
The circuit will be run in 6mm or 10mm cable, which is large.
If you do not already have a cooker circuit, you will have to have one professionally installed by an electrician who is a member of a self-certification scheme (there is an alternative process where you notifythe building control office and pay for inspection, test and certification).
If you already have such a circuit, installing a new electric cooker or hob is easy.
A typical single electric oven takes about 10-12 amps and can be run off the socket circuit using an FCU, so you can have either a gas or an electric oven, whichever you want. A double electric oven needs a cooker circuit.
Gas cookers usually have a rubber hose with a plug-and-twist fitting rather like putting in a light bulb, I don't thinkyou need a gas engineer to do that, but you may like to check your fitting and ask on the "Plumbing and Central Heating" forum, where the Corgi people hang out.
p.s. my gas hob is perfectly clean! and food spills/fat splashes do not burn on, like they do on a ceramic hob.
