Replace Gas Cooker Carron 1200G?

I own a Carror Huite Cuisine, and a Gas Cooker Carron 1200 G.

I would like these to be either fully serviced and worn out part replaced or alternaively have Gas Cooker Carron 12G replaced with similar a brandnew one.
Please let us know your quote.

My wife likes Gas Cooker Carron 1200G so much that she does not want any other make.

If you have one in stock, then we would like to know the cost+ delivery cost, and quote in case we ask you to have your enginneers call in at out premises install and fit a new one.

We are based in Middlesesx ( TW7 area ) in London.

Thank you.

B Tank