You would need to physically replace the Italian QZERTY keyboard for a UK QWERTY one.
In 99% of laptops this can be done in 2-3 minutes and usually just involves removing 2-3 screws and a ribbon cable that connects the keyboard to the computer.
Try to find out the part number for the UK keyboard, before you make a purchase, so you can make sure that you are able to source one "cheaply" later.