Before you buy
7 questions
Will it definitely find me a slot?
No, and be wary of anyone who promises that. It can only catch a slot that actually appears, which depends on your centres and your dates. What it does is type the form and check your centres for as long as you leave it running, and make sure you know the moment one does.
I haven't booked a test yet. Can I use it?
Yes. Add your licence number and a test-centre area, then press Start. It checks the centres in that area, holds the first slot inside your dates and times, and sounds the alarm. You book and pay on the DVSA site yourself. Step by step in the guide.
I've already booked a test. Can I still use it?
Yes. Add your booking reference and press Start. It checks the centres your test can move to, holds the first slot that fits and sounds the alarm. Set the latest date before your current test so it only holds earlier ones. You confirm the change. Step by step in the guide.
Does it book the test for me?
No. It auto-fills the DVSA form, finds a slot that fits and holds it, which gives you the DVSA's 15 minutes to finish. You check the date, time and centre, then book and pay on the DVSA site yourself. It never books, pays for, changes or cancels a test.
Which test centres does it work with?
Any DVSA car test centre in England, Scotland and Wales that the booking site offers you. For a new booking you give it a postcode area, and can narrow it to the centres you want. For a test you already have, it checks the centres the DVSA lists for that booking. Since 9 June 2026 that means your current centre, the 3 nearest to it, and the one you first booked (for a test already booked on 9 June 2026, the centre it was at that day). Northern Ireland uses a different booking service, so it does not work there.
How much is it, and is there a subscription?
£10, paid once, with unlimited auto-fill. There is no subscription and nothing renews. One payment covers the Chrome extension and the Android app, on the email address you paid with, for up to two licence numbers.
What about refunds?
All sales are final. At checkout you agree to immediate access, which ends the 14-day cancellation right, so there are no refunds for a change of mind or because no earlier slot turned up. The refund policy has the details.
Using it
6 questions
Do I have to leave it running?
Yes. On Chrome it searches in a DVSA tab you leave open, so leave that tab alone and get on with something else. On Android, leave the app open with the screen on; a phone on a desk is the dependable setup. Either way you get a loud alarm when it finds something.
Is this a Chrome extension?
Yes. Driving Test Helper is a driving test extension for Google Chrome, installed from the Chrome Web Store, plus an Android app that does the same job on a phone. One purchase covers both. The extension needs Google Chrome on a computer; on a phone, use the Android app.
Is there an iPhone app?
No. With an iPhone, use the Chrome extension on a computer. The Android app is downloaded from this site rather than the Play Store.
What about the security check and CAPTCHA?
Those are yours. The DVSA booking site sometimes shows a security check or puts you in a queue. The status line tells you when a check needs solving, and it waits in the queue until you are let in. Nothing in it gets round the check for you.
The DVSA site shows Error 15 or says I'm blocked. What now?
That's the DVSA's own limit, not a fault in the tool. The DVSA blocks any connection that visits too often in a short time, whether you're using Driving Test Helper or refreshing by hand. It's tied to your internet connection (your IP address), so clearing cookies or switching browser won't help, and we can't remove it. It's temporary and usually lifts within a few hours, occasionally up to 24. To carry on sooner, switch connection, for example to your phone's mobile data, or restart your router, which gives you a new IP address with some providers. Then press Start again. To make it less likely, raise the Start-over wait under Search timing.
What happens when it finds a slot?
It selects the slot, which makes the DVSA hold it for 15 minutes, plays a loud alarm and stops. Check the date, the centre and the time, then submit and pay on the DVSA site as you normally would.
Your details
2 questions
Where does my licence number go?
Into the DVSA form. To hold each purchase to two licence numbers we keep a hashed version of it, never the number itself. Your booking reference, centres, dates and the slots it finds stay on your own device. What we keep, and how to delete it.
Is it part of the DVSA?
No. Driving Test Helper is an independent tool, not affiliated with, or endorsed by, the DVSA or any government body.
Still stuck?
The setup guide covers installing, signing in and every setting.