There is always a waiting list for driving tests - six or eight weeks used to be typical. At the moment you might have to wait months You might have to wait even longer. If you don't want to wait that long this is what you have to do: Book your test in the usual way via the government website.
Do not be tempted to use a third party to book your driving test - they will charge you a commission that you don't need to pay.
Now you've got your driving test booked - great. But it's months away and it's going to cost you a small fortune in driving lessons while you wait. Also, you don't want to use public transport any longer than you have to. You need an earlier test date!
You can sit in front of your computer all day and keep checking the DVSA website for earlier dates but that's tedious and, in any case, you probably don't have the time.
The good news is you can get someone to do it for you!
Driving Test Genie 'ping' the DVSA website continuously and when they find an earlier test date than you one you booked they send you a text asking if you want to swap. All you have to do is reply to the text within ten minutes and you have an earlier test date.
I'm a driving instructor and I've used their service many times. Driving Test Genie has never failed to find and earlier test date for my customers. It's definately worth a try.
If you use this link to go to the Driving Test Genie website you'll get a discount off their already very reasonable prices (disclaimer: I get a small referral fee) so it's a win/win!)