Services near Lock 21, Cosgrove Lock
Find businesses, services and amenities near Lock 21, Cosgrove Lock on the Grand Union Canal.
A single lock on the Grand Union Canal near the village of Cosgrove, close to the Northamptonshire and Buckinghamshire border. Sits near the Cosgrove Iron Trunk Aqueduct, which carries the canal over the River Great Ouse — an early cast-iron aqueduct built in 1811 to replace an earlier stone structure that had collapsed. Part of the original Grand Junction Canal, opened in the 1790s.
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Lock Status
Open
No issues reported. If Lock 21, Cosgrove Lock is closed or restricted, let other boaters know.
Browse by category near Lock 21, Cosgrove Lock
Nearby Businesses (33)
Fuel & Utilities (12)
Cosgrove Lock Water Point
Cosgrove Services Water Point
Cosgrove Services Elsan Point
Giffard Park Elsan Point
Stoke Bruerne Bottom Lock Water Point
Stoke Bruerne Bottom Lock Elsan Point
Peartree Bridge Water Point
Stoke Bruerne Water Point
Fenny Stratford Water Point
Fenny Stratford Elsan Point
Gayton Junction Water Point
Gayton Junction Elsan Point
Mooring & Berthing (10)
Food, Drink & Hospitality (4)
Maintenance & Repair (3)
Hire & Experience (3)
Chandlery & Supplies (1)
7-Day Forecast at Lock 21, Cosgrove Lock
Tue 5 May | Today | Tmrw | Fri 8 May | Sat 9 May | Sun 10 May | Mon 11 May | |
|---|---|---|---|---|---|---|---|
| Outlook | 🌦️ | 🌦️ | 🌦️ | 🌦️ | ⛅ | ⛅ | ⛅ |
| High | 14°C | 12°C | 14°C | 16°C | 20°C | 20°C | 12°C |
| Low | 8°C | 4°C | 3°C | 10°C | 9°C | 10°C | 7°C |
| Wind | 12 mph N | 14 mph NE | 5 mph S | 8 mph SE | 11 mph E | 18 mph NE | 15 mph N |
| Gusts | 22 mph | 27 mph | 13 mph | 15 mph | 22 mph | 34 mph | 28 mph |
| Rain chance | 18% | 14% | 20% | 25% | 58% | 52% | 31% |
| Rainfall | 0.6 mm | 0.3 mm | 0.3 mm | 0.3 mm | — | — | — |
| Sunshine | 2.4h | 9.5h | 11.5h | 14.5h | 12.9h | 1.5h | 7.8h |
| UV index | 3 | 3 | 5 | 6 | 6 | 2 | 4 |
Frequently Asked Questions
Lock Facts
- Canal
- Grand Union Canal
- Lock Number
- 21
- CRT District
- GU









