I had to apply for a new driving licence because the old one was paper and had almost fallen apart. It cost £20 for a photocard licence.
As part of the process I had to register with the Government Gateway. “The Government Gateway is the website you use to register for online government services. It is an important part of the government’s strategy of delivering ‘joined up’ government, enabling people to communicate and make transactions with government from a single point of entry.”
I can now use a single User ID and Password for multiple online government services. They send you a User ID card.