Quick answer
Roundabouts produce some of the most disputed collisions on UK roads, because two cars can end up in the same piece of tarmac with each driver convinced the other was in the wrong. A car cuts across from an inside lane to take a late exit, a vehicle enters without giving way and clips your side, or someone hesitates and is hit from behind. Working out who is at fault on a roundabout is rarely as instinctive as a straight rear-end shunt, but the Highway Code gives a clear framework, and the physical evidence usually settles it.
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Hit on a roundabout: who is at fault and what to do (UK)
Roundabouts produce some of the most disputed collisions on UK roads, because two cars can end up in the same piece of tarmac with each driver convinced the other was in the wrong. A car cuts across from an inside lane to take a late exit, a vehicle enters without giving way and clips your side, or someone hesitates and is hit from behind. Working out who is at fault on a roundabout is rarely as instinctive as a straight rear-end shunt, but the Highway Code gives a clear framework, and the physical evidence usually settles it.
This guide explains how fault is decided when you are hit on a roundabout in the UK, the give-way rule that does most of the work, how lane discipline and signalling affect the picture, and how the practical side of a non-fault claim is handled for you. The full mechanics of these claims are set out on our dedicated page at /roundabout-accident-claims, and the broader picture of how a non-fault claim runs end to end is at /non-fault-car-accident-claims.
The rule that decides most roundabout collisions: give way to the right
The single most important rule on a roundabout is rule 185 of the Highway Code: when approaching a roundabout you must give priority to traffic approaching from your right, unless signs, road markings or traffic lights tell you otherwise. A driver who enters a roundabout and collides with a vehicle already on it, coming from their right, has usually failed that rule. They pulled out when they should have waited. That is the most common roundabout fault scenario, and in it the entering driver normally carries the blame.
Rule 184 backs this up by requiring drivers to decide as early as possible which exit they need, to get into the correct lane on approach, and to adjust speed and position to match conditions. Rule 186 sets out the lane discipline: in the absence of signs or markings, use the left-hand lane for a left turn or the first exit, the right-hand lane to turn right or go full circle, and choose the most appropriate lane for exits in between. A driver who ignores this - sitting in the right-hand lane and then cutting left across your bonnet to leave, or hugging the left lane and swinging right - is the one creating the danger.
Rule 187 also requires particular care for, and asks drivers to watch out for, cyclists, motorcyclists, horse riders and long vehicles on a roundabout, all of which may take an unexpected course or need more room. The underlying point is consistent: priority belongs to traffic already on the roundabout, and a driver changing lanes or exiting must do so safely without cutting across someone who has the right of way.
DETAIL
Section 3 of the walkthrough.
The common roundabout collisions and who tends to be at fault
Most roundabout disputes fall into a few recognisable patterns, and knowing which one you are in helps you gather the right evidence.
Entering without giving way. A driver joins the roundabout and hits a car already circulating from their right. Under rule 185 the entering driver almost always carries the blame.
Cutting across lanes to exit. A driver in the inside (right-hand) lane crosses a car in the outside (left-hand) lane to take an exit, or vice versa. The driver who changed lanes without making sure it was clear is usually at fault under the lane-discipline rules, but if both were straying it can be split.
Side-by-side on a multi-lane roundabout. Two cars travel round in adjacent lanes and converge. Fault turns on who left their lane, which the angle of impact and the paint-transfer evidence usually reveal.
Rear-end on the roundabout. A driver hesitates or stops to give way and is hit from behind. As with any shunt, the driver behind, who should have kept a safe distance under rule 126, is normally liable.
Mini-roundabouts. The same give-way-to-the-right rule applies, but the tight geometry and the temptation to 'straight-line' a mini-roundabout cause frequent disputes. Evidence of each car's path is key.
Why the evidence matters more on a roundabout
Because roundabout collisions often come down to one driver's word against the other about who was where, the physical evidence carries even more weight than usual. The point and angle of impact tell an engineer a great deal: a strike to your front quarter as you came round suggests someone entered into you; a scrape along your driver's side suggests a vehicle moved across from the lane beside you. Where each car ended up, the direction of the scrapes, and any paint transfer all help reconstruct who crossed whose path.
That is why your photographs at the scene are so valuable. Capture both cars exactly where they came to rest before anyone moves them, the lane markings and arrows on the roundabout, the signs on approach, both number plates, and the damage on both vehicles. Note which entry and exit each of you was using. Many roundabouts, especially larger signalised ones in towns and on Transport for London roads, are covered by CCTV, so look for cameras - that footage is often overwritten within 14 to 31 days and has to be requested quickly. A dashcam clip, yours or a witness's, is frequently the single most decisive piece of evidence in a roundabout dispute.
What to do at the scene
Stop and check for injuries - section 170 of the Road Traffic Act 1988 requires you to stop after any accident involving damage or injury, even as the innocent party. Switch on hazards. A roundabout is a live, fast-moving environment, so if the cars can be moved safely to an exit road or a verge once positions are noted, do so; if not, get everyone clear of the circulating traffic.
Exchange details as section 170(2) requires: name, address, the keeper's details if different, and the registration. Take the other driver's insurer and policy number, and a mobile number. If they refuse, drive off, or give false details, record the registration, make, model and colour and report to the police within 24 hours under section 170(6).
Then photograph and gather witnesses before the scene clears. On a roundabout the resting positions and the lane each driver was using are decisive, so capture them before vehicles move. Get the name and number of any independent witness - a following driver, a pedestrian at a crossing, a bus or delivery driver - because a roundabout case can hinge on an account of who failed to give way or who changed lanes.
How a non-fault roundabout claim is handled for you
When the evidence shows the other driver was at fault, their insurer is responsible for putting you back where you were before the collision. If your car is not driveable, we arrange 24/7 recovery and secure storage so it is not accruing compound charges or sitting exposed. An independent engineer then inspects the car before any repair starts, fixing the correct repair scope and recording any pre-existing damage, so the at-fault insurer cannot under-specify the work or blame you for marks that were already there. Repairs follow at a vetted bodyshop working to PAS 125 or BS 10125 standards, coordinated on your behalf with the cost recovered from the at-fault insurer.
While your car is off the road, a like-for-like replacement can be arranged. Under Lagden v O'Connor [2003] UKHL 64 a non-fault driver who cannot afford to hire otherwise can recover the reasonable cost of credit hire from the at-fault insurer, within the rate and duration limits set in Dimond v Lovell [2002] 1 AC 384. The reason to route a non-fault claim this way rather than through your own comprehensive policy is to keep your excess and no-claims discount out of it, since you did nothing wrong. The end-to-end process is explained at /non-fault-car-accident-claims.
What if liability is split?
Roundabout claims are more prone to a split-liability outcome than a clean rear-end shunt, because both drivers can share some responsibility - for example where each strayed from their lane, or where one entered late but the other was also poorly positioned. A split (such as 50/50 or 75/25) means each insurer bears a share of the other side's loss. Good evidence is precisely what moves a case off an unfair split and onto a clear non-fault finding, which is why an early independent engineer's report and any CCTV or dashcam footage matter so much. We argue the evidence engineer-to-engineer on your behalf to secure the correct apportionment rather than an easy halfway compromise.
Under section 2 of the Limitation Act 1980 you generally have six years from the date of the accident to claim for vehicle damage, and section 11 gives three years from the date of injury for personal injury. Those are long-stops. The real clock is the evidence: roundabout CCTV on a 14 to 31 day loop, dashcam files that overwrite within hours, and witnesses whose memory of a fast, confusing manoeuvre fades quickly. Opening the file at once is the difference between a clean non-fault result and an avoidable split.
Take action
If you have just been in a non-fault collision, the fastest way to protect your claim is to open the file with us inside the first hour. We dispatch recovery, lodge the relevant CCTV requests inside the retention window, and notify the third-party insurer for you.
