Choosing the right aggregate for UK driveways

Start with the sub-base, not the surface

Almost every premature driveway failure we see traces back to the sub-base, not the visible surface. MOT Type 1 (granular sub-base to SHW Clause 803) remains the default for residential and light-commercial driveways across the UK because it compacts to a near-impermeable platform that resists rutting.

On clay-heavy ground common across the Midlands and South East, lay a geotextile separator before the Type 1 to stop fines migrating upward. For sand or chalk subsoils typical of the South Coast, you can often reduce sub-base depth to 100 mm without compromising load-bearing.

Block paving vs porcelain vs decorative gravel

Block paving remains the most forgiving choice — individual units can be lifted and re-set, and the jointing sand actively helps drainage. Concrete block in 50 mm thickness handles domestic loading; 60 mm if you're parking a transit van or larger.

Porcelain paving has overtaken Indian sandstone for new builds in the last three years. It's near-zero porosity, won't stain from oil drips, and the 20 mm vitrified format is rated for vehicular use on a bedded slab. The trade-off: it's unforgiving of substrate movement, so the sub-base spec matters more.

Decorative gravel — typically 14–20 mm rounded or angular stone — gives an instant drainage solution and a permeable surface that won't need SuDS approval for most domestic plots. Use a cellular gravel-retention grid underneath to stop migration and ruts.

Permeable paving and SuDS

Since 2008, paving over more than 5 m² of front garden in England requires either a permeable surface or a SuDS-compliant drainage plan. The simplest compliant route is a permeable block-paving system with an open-graded sub-base (typically Type 3 or 4/20 mm clean stone), which acts as both load-bearing layer and attenuation reservoir.

For larger commercial bays — supermarket forecourts, school car parks — we frequently spec a Type 3 sub-base with a CBR design tailored to expected axle loads. Atlas can supply graded sub-base materials direct to site by tipper or grab from any of our UK depots.

Regional considerations

Hard frost regions (Scotland, North Pennines, parts of Yorkshire) need frost-resistant block or porcelain — avoid honed limestone or unsealed sandstone outdoors. Coastal projects from Brighton to Liverpool benefit from inert porcelain or granite kerbing because salt aerosol attacks limestone and most concrete kerbs over time.

If you're planning a driveway build in a specific city, our regional landing pages cover delivery windows, common project types and stocked profiles for that area.