WB
Cardiff Gate Services
M4 J30 · Welcome Break
📍 Location & 11 Nearby Attractions
📊 How busy is the M4?
The M4 carries up to 156,491 vehicles a day
at its busiest stretch (near J4),
including 6,249 HGVs —
the 6th busiest motorway in Britain.
Official Department for Transport counts, 2025.
156,491
🚗 vehicles a day · near J4
4%
HGVs
share of traffic on the busiest stretch
Busiest stretch of each motorway — vehicles a day
M25
212,636
M6
187,521
M56
179,634
M1
162,446
M8
158,065
M4
156,491
View as table
Road Busiest stretch Vehicles/day HGVs/day HGV share M25
near J14
212,636
14,853
7% M6
J20–J21
187,521
23,492
12.5% M56
J3–J4
179,634
7,547
4.2% M1
near J9
162,446
19,151
11.8% M8
J16–J17
158,065
7,214
4.6% M4 ◀
near J4
156,491
6,249
4%
🍔 Food & Shopping
Food & Drink
Burger King Starbucks KFC Greggs Subway
Shops
WHSmith Waitrose
⛽ Fuel & Accommodation
⛽ Welcome Break 🏨 Days Inn
🚻 Facilities
🚻 Toilets
🍼 Baby Change
♿ Accessible
📶 Free WiFi
🏧 ATM
🚿 Showers
🐕 Dog Area
📍 What's Near Cardiff Gate Services (11 places)
All (11)
⚽ Football & Rugby Union (2)
🏏 Cricket (1)
🏖️ Coastal & Seaside (1)
🏰 Landmarks & Stately Homes (2)
🎭 Culture & Museums (1)
🏥 Major Hospitals (1)
🎓 Universities (1)
🏙️ Towns & Cities (1)
🏟️ Concert & Event Venues (1)
⚽
Principality Stadium
5 mi ↑ W · tap for map
⚽
Cardiff City FC (Cardiff City Stadium)
5 mi ↑ W · tap for map
🏏
Glamorgan CCC (Sophia Gardens)
5 mi ↑ W · tap for map
🏰
Cardiff Castle
5 mi ↑ W · tap for map
⚽ Football & Rugby Union
⚽
Principality Stadium
5mi ↑ W
▾
74,500-capacity national stadium. Wales rugby, FA Cup semis, concerts. Retractable roof.
⚽
Cardiff City FC (Cardiff City Stadium)
5mi ↑ W
▾
Championship ground, 33,000 capacity.
🏏 Cricket
🏏
Glamorgan CCC (Sophia Gardens)
5mi ↑ W
▾
International cricket venue. England ODIs and T20s.
🎭 Culture & Museums
🎭
St Fagans National Museum
6mi ↑ W
▾
Open-air museum of Welsh life. 40+ historic buildings from across Wales. Free entry.
🏰 Landmarks & Stately Homes
🏰
Cardiff Castle
5mi ↑ W
▾
Roman fort, Norman keep, and Victorian Gothic fantasy interiors. City centre.
🏰
Caerphilly Castle
5mi ↑ N
▾
Massive 13th-century castle with iconic leaning tower. Second largest castle in Britain.
🏖️ Coastal & Seaside
🏖️
Cardiff Bay
6mi ↑ SW
▾
Waterfront development. Millennium Centre, Senedd, Norwegian Church, Doctor Who Experience.
🏟️ Concert & Event Venues
🏟️
Cardiff International Arena
5mi ↑ W
▾
Major concert and events venue in Cardiff city centre.
🏙️ Towns & Cities
🏙️
Cardiff
5mi ↑ W
▾
Welsh capital. Arcades, markets, castle, bay, vibrant nightlife and food scene.
🎓 Universities
🎓
Cardiff University
5mi ↑ W
▾
Russell Group university in the city centre.
🏥 Major Hospitals
🏥
University Hospital of Wales
3mi ↑ W
▾
Major teaching hospital. Wales's largest hospital complex.
ℹ️ Service Information
📍 J30
📮 CF23 8RA 📅 Opened 1996 🅿️ 350 car spaces 🧭 51.5356, -3.1657
📋 About Cardiff Gate Services
Welcome Break services on the M4 at the eastern edge of Cardiff. Close to St Mellons and the A48(M). Serves traffic heading to Cardiff city centre, Cardiff Bay, and the Principality Stadium.
Use our route checker to check conditions before you travel, or our breakdown assistance for roadside help.
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