The driving test backlog costs instructors about £470 per test-ready pupil: here is the maths

In December 2025, the National Audit Office published its investigation into car driving test waiting times. The headline finding: the average wait was 22 weeks in September 2025, and 70% of test centres were at the maximum 24-week wait. The NAO reported that DVSA did not expect to hit its 7-week target until November 2027. DVSA's annual report for 2025-26 now lists that target with "No date set". The newer DVSA figures are not much comfort: in August 2026 the median wait from booking to test was 11.1 weeks, and learners had to look 20.0 weeks ahead to find at least 10% of slots free (DVSA table DRT121G).

Most coverage of the report focused on learners. The pressure on pupils is real: in DVSA's October 2025 survey of driving instructors, 60.7% of ADIs said pupils taking extended breaks from lessons (3 weeks or more) had affected their business. Asked why pupils were taking those breaks, 94.1% pointed to high waiting times for a driving test and 58.9% to financial constraints. Much less has been written about what the same backlog is doing to ADI revenue. This post does that calculation, with every input either sourced or labelled as our assumption.

The short answer: at the national median, the extra wait compared with before the pandemic costs about £467 per test-ready pupil. In London or Scotland it is closer to £900-£1,000. Multiply by the number of pupils who reach test standard in your diary each year.

Why the backlog is an instructor revenue problem

When a pupil passes their test, two things happen economically. First, you lose a revenue source: that pupil's lessons stop. Second, you gain the capacity to take on a replacement pupil who starts at zero and works through a full course of lessons. The replacement pupil is, economically, a better outcome than keeping a test-ready pupil going indefinitely on one maintenance lesson a week.

For scale: DVSA's October 2025 survey found the average ADI was actively training 18.1 learners, 8.1 of whom had a practical test booked.

The backlog slows the cycle. Every extra week a test-ready pupil waits, they are not a fresh pupil generating 2 lessons a week. They are a test-ready pupil taking 1 lesson a week (if you are lucky), half a lesson a week, or nothing at all.

Here is what that looks like as a revenue model.

The calculation

Inputs

Using August in both years keeps seasonal swings in demand out of the comparison.

Cost per test-ready pupil

• Extra wait at the national median: 11.1 weeks minus 7.0 weeks = 4.1 weeks
• Revenue gap: 4.1 × £114 = £467 per pupil

The regional picture is worse where waits have grown most (DRT121G, August 2019 to August 2026):

Now scale it

Multiply by the number of your pupils who reach test standard in a year. That depends on your hours and your pupils, so here are three examples at the national median:

Two caveats pull in opposite directions. The gap is an upper bound on lost income, because it assumes you could refill every freed hour with a new pupil: in DVSA's October 2025 survey only 47.3% of ADIs had a waiting list. On the other side, it assumes the waiting pupil keeps one lesson a week. A pupil who stops lessons entirely generates nothing while they wait.

The guilt tax

There is a psychological dynamic that makes this worse than the maths suggests: it is tempting to undercharge for maintenance lessons.

The reasoning goes like this. The pupil has already paid for a full course of lessons to get to test standard, and asking them to keep paying for lessons they arguably don't need feels wrong. So the instructor drops from 2 lessons a week to 1, cuts sessions from 2 hours to 1, or quietly lowers the price per hour.

This is understandable. It is also expensive. A maintenance lesson is still a professional service. You are still in your car, with your time committed, responsible for safety, coaching the pupil and keeping their confidence up.

Charging less for it costs you money and makes nobody a better driver.

What happens to pupils who pause completely

The picture for instructors whose pupils take extended breaks is grimmer still. A learner who stops driving for weeks loses sharpness on the skills the test assesses: junctions, roundabout decisions, independent driving. How much, and how fast, varies by pupil.

What this means practically:

• Pupils who pause for three months often need remedial lessons before the test
• Remedial lessons at the end of a course feel different psychologically (to you and to the pupil) than normal lessons
• Some pupils lose confidence and postpone the test again
• Some pupils change instructor ("I need a fresh start") and the hours you have put into them walk out the door

The attrition rate for test-ready pupils during a long wait is not zero. We have no published figure for how many change instructor or give up, so track it in your own diary: every pupil who leaves before their test takes their remaining lessons, and your test-day fee, with them.

The waiting list trap

The backlog also distorts your waiting list in a way that compounds the problem.

Picture a waiting list that works: a new enquiry comes in, goes on the list, a slot opens when a pupil passes, and the new pupil starts within 2-4 weeks.

With a longer wait, the slot does not open when you expect it to. Pupils are stuck in your diary longer than planned. Waiting list enquiries either go stale (they find another instructor who has immediate availability) or they join your list expecting a 4-week wait and are still waiting at month three.

The DVSA's October 2025 survey found 47.3% of ADIs still maintained waiting lists, down from 56.4% in September 2024, and 45.4% had room to take on new pupils, up 8.8 percentage points. Some of that spare capacity may be hours freed by test-ready pupils cutting back while they wait.

Eight practical strategies to reduce the revenue impact

1. Price maintenance lessons at full rate, and explain why

A maintenance lesson is a 1-hour coached session to keep a test-ready pupil sharp across all the test competencies. It is professional teaching, not a courtesy chat in a car park. Charge your standard hourly rate. Explain the value to the pupil: "Without regular lessons, you'll lose the edge we've built up. A long gap will show in your roundabout decisions and hazard response. We want you walking into that test as sharp as possible."

Pupils are more likely to accept this when it is framed as an investment in their pass, not an obligation to fund your diary.

2. Structure maintenance as a named product, not a residual

"Maintenance lesson" sounds like leftovers. "Test Preparation Programme" sounds like what it is: a deliberate, structured programme of lessons designed to peak a learner's performance at the exact moment of their test.

Give it a structure:

• Weeks 1-4 after reaching test standard: 1 lesson per week, full 2-hour session, focusing on independence (driving with minimal input from you)
• Weeks 5-12: 1 lesson per week, 1-2 hours, mock test conditions for at least half the session
• Final 4 weeks before test: 2 lessons per week, 1 hour each, reintroducing any weak areas and re-running mock tests to confirm readiness

Presented this way, the value is clear. The pupil knows what they are paying for and why each session matters.

3. Introduce a retainer block booking

Offer test-ready pupils a "pre-test block" of 10 sessions at a slight discount (5-10%) that they prepay. This secures your revenue, gives the pupil a clear and affordable structure, and avoids the "should I book another lesson this week?" uncertainty that drives extended breaks.

Block bookings also give pupils a reason to turn up: a pupil who has prepaid 10 sessions has more to lose by cancelling at 24 hours' notice than one booking week-to-week.

4. Set a 3-week maximum break policy for test-ready pupils

Put this in your terms and conditions and communicate it clearly when a pupil reaches test standard: "Once you're test-ready, I recommend a maximum gap of 3 weeks between lessons to avoid skill regression. Beyond 3 weeks, we'll need to schedule an assessment lesson before returning to normal test prep."

This is defensible (it is genuinely in the pupil's interest) and it structures the conversation around their outcome rather than your revenue.

5. Reframe the test wait as a pass rate investment

A pupil who keeps weekly lessons going through the wait arrives at their test in better practice than one who paused for three months and crammed four lessons before the date. There is no legal minimum number of lessons, but the studies of novice drivers cited in the Department for Transport's 2026 consultation found drivers who passed reported a mean of 37 to 52 hours with an instructor.

Share this framing explicitly with pupils who are considering a break: "The wait is frustrating, I know. But keeping your driving going through the wait means you arrive at the test in practice. Taking three months off and cramming before the test is the riskier strategy."

Framing the maintenance lessons as an investment in the pass, rather than a financial obligation, changes the conversation.

6. Use the wait to work on weak areas the test did not require

A pupil who has reached test standard has been trained to pass. They have not necessarily been trained to drive. Use the test wait productively: motorway driving (learners can drive on motorways with an ADI in a dual-controlled car), night driving, rural roads, multi-lane roundabouts, driving in heavy rain. Some of this is not on the test but all of it makes them a better driver and a more confident one.

This is a genuine service enhancement that justifies the continued investment and gives the lessons a purpose beyond "staying sharp for the test."

7. Track your backlog exposure

Know your numbers. At any given time, you should know: how many of your active pupils are test-ready, when their test date is, and whether they are on a maintenance schedule or at risk of pausing. For many instructors, this is ad hoc information spread across texts and memory. Turning it into structured data, even a simple spreadsheet, lets you forecast the revenue impact before it arrives.

8. Have the test-readiness conversation earlier

One underrated consequence of longer waits is that instructors who would previously tell a pupil "you're probably ready to book" at the 35-hour mark now need to have that conversation earlier, because the wait will give the pupil the extra practice time needed to consolidate. Pupils only get 2 changes to a booking, so the date still has to be realistic.

This is a mindset shift: test booking is now a long-range planning conversation, not a milestone conversation. If you wait until a pupil is "clearly ready" before talking about booking, you are building extra delay into the process before the wait even begins.

What the NAO report means for 2026 and 2027

The National Audit Office's December 2025 report is blunt about timelines. DVSA ran a £44 million deficit on driving tests in 2024-25: the £62 weekday fee has not changed since 2009, against a cost of around £86 per test. DVSA had only 83 more full-time equivalent examiners in September 2025 than in February 2021, and examiner attrition was 14% in 2024-25, so capacity will not be resolved quickly. The target is a 7-week wait. The NAO reported that DVSA did not expect to hit it until November 2027, and DVSA's annual report for 2025-26 now lists it with "No date set".

For ADIs, that means the conditions described in this post are the operating environment for the next 18 months at minimum: DVSA's own annual report says an extra 450,000 to 500,000 tests above normal capacity are needed over that period to get waiting times back to target. Plan your business around the backlog rather than waiting for it to clear.

Where Orbit fits

Orbit's booking tools send pupils automatic email reminders before each lesson, so test-ready pupils on a weekly maintenance lesson are not relying on you to chase them through the wait.

Block bookings in the Orbit diary handle the prepayment: the pupil pays for the pre-test block upfront and each lesson draws down from that credit, so the income is banked whatever happens to test dates.

Each pupil's record in Orbit's pupil management holds their practical test date and their progress, which beats piecing it together from WhatsApp and a spreadsheet when you are trying to see who is test-ready and when they will leave your diary.

Sources: National Audit Office, Investigation into car driving test waiting times (December 2025); DVSA, Annual report and accounts 2025 to 2026; DVSA table DRT121G, Car driving test waiting times and availability (August 2019 and August 2026 data); DVSA, Working as a driving instructor survey: 2025 results (October 2025 survey); Department for Transport, Introducing a minimum learning period for learner drivers (consultation, January 2026).