London to Exeter by Chauffeur: A303 or M5, and When to Use Each
The shorter road to Exeter is often the slower one, and the reason is a few miles of Wiltshire.
The straight line and the long way round
Exeter is the point where the two south-western corridors converge, and the choice between them is the single most consequential decision on the journey. The A303 leaves the M3 near Basingstoke, runs past Stonehenge and across Somerset, and joins the M5 just north of the city. The alternative goes the long way, out on the M4 to Bristol and then south on the M5, adding distance in exchange for continuous motorway.
On a quiet winter Tuesday the A303 wins comfortably and it is a far more interesting drive. On a summer Friday it can lose an hour or more to single carriageway sections that have no capacity to absorb demand. A chauffeur planning this route will look at conditions on the day and choose accordingly rather than defaulting to the shorter line.
Where the A303 actually slows
The A303 is not uniformly bad; it is intermittently constrained. Long stretches are dual carriageway and quick. The problems cluster where those stretches narrow, and the sections around Stonehenge and toward Ilminster are the ones that reliably queue in season. Traffic bunches behind slower vehicles with limited overtaking, and once a queue forms there is no parallel route of any quality to absorb it.
- Dual carriageway sections that flow well outside peak periods
- Single carriageway pinch points that queue quickly in summer
- Very limited alternatives once a delay begins
- A pleasant and much faster drive outside the holiday season
Arriving in Exeter
Exeter is compact and the M5 leaves you close to it, with junction 30 feeding the main approaches. The centre has a pedestrianised core around the High Street and Cathedral Green, so the practical drop-off points are on the surrounding streets. The quayside, the university and the business parks toward Sowton and the airport are all straightforward by comparison, and each is a short run from the motorway.
Timings in both directions
Three and a half to five hours is a sensible band, and it widens considerably during school holidays. The direction matters too. Westbound on a Friday afternoon meets the holiday flow head-on. Eastbound on a Sunday afternoon meets its mirror image, and the last stretch into London adds its own hour. Midweek travel in either direction is a completely different experience and worth choosing where the diary allows.
Exeter as a staging post
Very few journeys stop at Exeter. It is the gateway to south Devon, the start of the A38 to Plymouth and Cornwall, and the turning point for the north Devon coast on the A361. That makes it a natural place to plan a break on a longer trip, or to split a very long journey across two days. Where the itinerary continues west, the total travel time deserves to be planned as one thing rather than as separate legs.
Plan your chauffeur journey
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Frequently asked questions
Should the chauffeur use the A303 or the M5?
It depends on the day. The A303 is shorter and quicker outside peak periods, while the M5 corridor is longer but more consistent when holiday traffic is heavy. The decision is made against live conditions rather than fixed in advance.
How long does London to Exeter take?
Three and a half to five hours is a fair planning band. School holidays, summer Fridays and bank holiday weekends all push toward the upper end, and no single figure should be treated as a promise.
Can you continue to Torquay, Salcombe or north Devon?
Yes, though the roads beyond Exeter are slower than their distances suggest, particularly toward the south Devon estuaries and the north coast. Those legs are planned as part of the overall itinerary so the day is realistic.