Gravel Types UK

The complete guide to decorative and landscape aggregates available in the UK. Compare density, size, colour, and best uses for every popular gravel type — with metric measurements and real UK pricing context.

At a Glance: UK Gravel Comparison

Type	Density	Sizes	Best For	Colour (Dry)
Slate Gravel	1,500 kg/m³	20mm, 40mm	Driveways, Paths	Pale grey to blue-grey
Golden Gravel	1,600 kg/m³	10mm, 20mm	Driveways, Paths	Warm gold to honey
Cotswold Buff	1,500 kg/m³	10mm, 20mm	Cottage gardens, Paths	Creamy buff to pale honey
Pea Gravel	1,550 kg/m³	6mm, 10mm	Garden paths, Play areas	Mixed natural (browns, creams, greys)
Grey Granite	1,600 kg/m³	14mm, 20mm	Modern driveways, Contemporary gardens	Silver-grey with sparkle
Plum Slate	1,500 kg/m³	20mm, 40mm	Feature areas, Borders	Muted purple-grey
Polar Ice	1,500 kg/m³	10mm, 20mm	Contemporary gardens, Borders	Bright white
Limestone	1,500 kg/m³	10mm, 20mm	Paths, Borders	Light grey to pale cream
Pebbles & Cobbles	1,800 kg/m³	30mm, 50mm, 80mm	Decorative borders, Water features	Mixed (varies by source)
Self-Binding Gravel	1,700 kg/m³	0–14mm (dust to stone)	Paths, Wheelchair access	Golden to grey (varies)

Slate Gravel

The UK's most popular decorative gravel. Angular pieces lock together, making it ideal for driveways and paths. Available in grey, blue, and plum variations from Welsh and Cumbrian quarries.

Density

1,500 kg/m³

Sizes

20mm, 40mm

Dry Colour

Pale grey to blue-grey

Wet Colour

Deep charcoal to black

Best For

• Driveways
• Paths
• Decorative areas
• Modern gardens

Pros

✓ Angular — stays in place
✓ Dramatic colour change when wet
✓ Widely available across UK
✓ Works with all garden styles

Cons

✗ Can be dusty when new
✗ Colour fades slightly with heavy sun exposure

Golden Gravel

A classic UK gravel choice, popular for its warm golden tones. Heavier than slate at 1,600 kg/m³, giving it good stability on driveways despite its rounder shape.

Density

1,600 kg/m³

Sizes

10mm, 20mm

Dry Colour

Warm gold to honey

Wet Colour

Rich amber

Best For

• Driveways
• Paths
• Traditional gardens

Pros

✓ Warm, inviting colour
✓ Very affordable
✓ Slightly heavier — good stability
✓ Complements red brick

Cons

✗ Rounded stones can scatter
✗ Less angular than slate

Cotswold Buff

Quarried from the Cotswold Hills, this honey-coloured limestone is the perfect match for period properties and cottage gardens. A uniquely British gravel that no US calculator site will ever reference.

Density

1,500 kg/m³

Sizes

10mm, 20mm

Dry Colour

Creamy buff to pale honey

Wet Colour

Golden honey

Best For

• Cottage gardens
• Paths
• Period properties

Pros

✓ Beautiful natural colour
✓ Quintessentially English
✓ Perfect for heritage properties
✓ Soft, warm appearance

Cons

✗ Can stain from leaf tannins
✗ Not ideal for heavy traffic driveways

Pea Gravel

Small, rounded stones that are gentle underfoot and perfect for paths and children's play areas. The 6mm size is popular for pot toppings and narrow borders.

Density

1,550 kg/m³

Sizes

6mm, 10mm

Dry Colour

Mixed natural (browns, creams, greys)

Wet Colour

Deeper natural tones

Best For

• Garden paths
• Play areas
• Borders
• Pot toppings

Pros

✓ Comfortable underfoot
✓ Child-friendly (no sharp edges)
✓ Excellent drainage
✓ Very affordable

Cons

✗ Scatters easily without edging
✗ Not suitable for driveways
✗ Sinks into soft ground quickly

Grey Granite

One of the hardest landscape aggregates available. The natural quartz content gives granite a subtle sparkle, especially when wet. Ideal for modern properties and high-traffic areas.

Density

1,600 kg/m³

Sizes

14mm, 20mm

Dry Colour

Silver-grey with sparkle

Wet Colour

Dark grey, pronounced sparkle

Best For

• Modern driveways
• Contemporary gardens
• Commercial areas

Pros

✓ Extremely hard-wearing
✓ Natural sparkle effect
✓ Heavier — excellent stability
✓ Low dust

Cons

✗ More expensive than standard gravel
✗ Limited colour range

Plum Slate

A premium decorative slate with rich purple tones that intensify dramatically when wet. Popular for feature areas and borders where visual impact matters more than pure function.

Density

1,500 kg/m³

Sizes

20mm, 40mm

Dry Colour

Muted purple-grey

Wet Colour

Rich plum to deep purple

Best For

• Feature areas
• Borders
• Japanese-style gardens
• Water features

Pros

✓ Stunning wet colour
✓ Unique purple tones
✓ Angular — stays in place
✓ Makes a statement

Cons

✗ More expensive than grey slate
✗ Colour intensity varies by batch

Polar Ice

Bright white marble chippings that create a crisp, contemporary look. Excellent for brightening shaded areas and providing contrast against dark foliage or slate walls.

Density

1,500 kg/m³

Sizes

10mm, 20mm

Dry Colour

Bright white

Wet Colour

Translucent white-grey

Best For

• Contemporary gardens
• Borders
• Mediterranean-style areas

Pros

✓ Bright, clean appearance
✓ Reflects light in shaded areas
✓ Striking contrast with dark planting

Cons

✗ Shows dirt and algae easily
✗ Can be dazzling in direct sun
✗ Needs occasional washing

Limestone

A versatile, affordable aggregate quarried extensively across the UK, particularly in Derbyshire and the Mendip Hills. Its neutral colour makes it a safe choice for almost any project.

Density

1,500 kg/m³

Sizes

10mm, 20mm

Dry Colour

Light grey to pale cream

Wet Colour

Mid grey

Best For

• Paths
• Borders
• General landscaping

Pros

✓ Affordable and widely available
✓ Neutral colour works everywhere
✓ Good for self-binding mixes

Cons

✗ Can become muddy in very wet conditions
✗ Softer than granite — wears faster

Pebbles & Cobbles

Large, rounded stones perfect for decorative features. Their weight (1,800 kg/m³) makes them one of the heaviest aggregates — important for calculating delivery needs.

Density

1,800 kg/m³

Sizes

30mm, 50mm, 80mm

Dry Colour

Mixed (varies by source)

Wet Colour

Deeper, richer tones

Best For

• Decorative borders
• Water features
• Dry river beds
• Rockeries

Pros

✓ Natural, organic appearance
✓ Very long-lasting
✓ Low maintenance
✓ Excellent for water features

Cons

✗ Heavy (1,800 kg/m³) — harder to move
✗ Uncomfortable to walk on
✗ Expensive per tonne

Self-Binding Gravel

A mix of fine dust and small stones that compacts into a firm, wheelchair-friendly surface. Increasingly popular for DDA-compliant paths and heritage properties where loose gravel isn't practical.

Density

1,700 kg/m³

Sizes

0–14mm (dust to stone)

Dry Colour

Golden to grey (varies)

Wet Colour

Compacts to a firm surface

Best For

• Paths
• Wheelchair access
• Cycle routes
• Listed building driveways

Pros

✓ Compacts into a firm, smooth surface
✓ Wheelchair and pushchair accessible
✓ No loose stones
✓ Natural appearance

Cons

✗ Can become muddy in prolonged wet weather
✗ Needs re-compacting periodically
✗ Not suitable for steep slopes

Gravel Size Guide

Gravel size matters as much as type. Smaller stones (6–10mm) are comfortable underfoot for paths and play areas. Medium stones (10–20mm) are the most versatile all-rounders. Larger stones (20–40mm) are ideal for driveways where stability under vehicle weight is important. Very large cobbles (50–80mm+) are decorative only.

Size Range	Feel Underfoot	Stability	Best Uses
6–10mm	Soft, comfortable	Low — scatters easily	Paths, play areas, borders
10–20mm	Moderate	Good all-rounder	Paths, gardens, light driveways
20–40mm	Coarse	High — locks together	Driveways, feature areas
40–80mm	Uncomfortable	Very high	Decorative borders, water features

How to Choose the Right Gravel

1. Start with the project type. Driveways need angular, 20mm+ gravel. Paths can use smaller, rounded stones. Decorative areas give you the most freedom.

2. Consider the setting. Traditional properties suit warm tones (Golden Gravel, Cotswold Buff). Modern builds pair well with cool tones (Grey Granite, Polar Ice, Slate).

3. Think about maintenance. Light-coloured gravel (Polar Ice, Cotswold Buff) shows dirt and algae more easily. Darker gravel hides stains but can fade in prolonged direct sun.

4. Check the wet colour. UK weather means your gravel will be wet half the year. Many people are surprised by how different gravel looks wet vs dry. Plum Slate and Grey Granite transform dramatically.

5. Match your budget. Standard gravel and golden gravel offer the best value. Premium options like Plum Slate and Polar Ice cost more but create a stronger visual impact. Always check delivery costs — they can exceed the material cost for small orders.

Calculate How Much You Need

Once you've chosen your gravel type, use our free calculator to get an exact tonnage, bag count, and cost estimate based on your measurements.

Open Gravel Calculator

Frequently Asked Questions

What is the most popular gravel in the UK?

Slate gravel (20mm) is the most widely used decorative gravel in the UK. It's angular, stays in place on driveways, and is available in a range of colours from grey to plum and blue. Golden gravel and pea gravel are also extremely popular for paths and gardens.

What gravel is best for a driveway?

Angular gravel in the 20–40mm range is best for driveways. Slate gravel, grey granite, and golden gravel are popular choices. Avoid smooth round pebbles — they roll under vehicle tyres and scatter easily. Angular stones lock together and create a stable surface.

What's the cheapest gravel in the UK?

Standard 20mm gravel and golden gravel tend to be the cheapest decorative options, typically £50–80 per tonne. MOT Type 1 sub-base is even cheaper at £25–40 per tonne, but it's not decorative. Buying in bulk (1,000kg+) always reduces the per-tonne price significantly.

What size gravel should I use?

6–10mm for paths and play areas (comfortable underfoot), 10–20mm for general garden use and borders, 20–40mm for driveways and feature areas. Larger sizes (40mm+) are best for decorative rockeries and borders where foot traffic is minimal.

Does gravel colour change when wet?

Yes — most gravel darkens significantly when wet. Slate goes from pale grey to deep charcoal, Plum Slate becomes a rich purple, and Cotswold Buff deepens to a golden honey colour. This is worth considering as UK weather means your gravel will be wet much of the time.

How much gravel do I need per m²?

At 50mm depth with standard gravel (1,500 kg/m³), you need about 75kg per m² — roughly 4 bags of 20kg. At 30mm depth, that drops to about 45kg per m². Use our free gravel calculator for an exact figure based on your area and chosen material.

Can I mix different types of gravel?

Technically yes, but it's not recommended for functional areas. Mixed gravels look messy over time as different-sized stones separate naturally. For decorative borders, complementary colours can work — just keep sizes similar. Never mix angular and rounded stones on a driveway.

Where does UK gravel come from?

Most UK gravel comes from quarries in Derbyshire (limestone), Somerset (golden gravel), Leicestershire (granite), and Wales (slate). Cotswold Buff comes from the Cotswolds region. Buying from suppliers close to these regions reduces delivery costs significantly.

Related Guides

More resources to help plan your gravel project

Gravel Types UK

At a Glance: UK Gravel Comparison

Slate Gravel

Best For

Pros

Cons

Golden Gravel

Best For

Pros

Cons

Cotswold Buff

Best For

Pros

Cons

Pea Gravel

Best For

Pros

Cons

Grey Granite

Best For

Pros

Cons

Plum Slate

Best For

Pros

Cons

Polar Ice

Best For

Pros

Cons

Limestone

Best For

Pros

Cons

Pebbles & Cobbles

Best For

Pros

Cons

Self-Binding Gravel

Best For

Pros

Cons

Gravel Size Guide

How to Choose the Right Gravel

Calculate How Much You Need

Frequently Asked Questions

Related Guides

Best Gravel for Driveways

Driveway Cost Guide 2026

Wheelchair-Friendly Gravel