| River | Length (km) | % Correct |
|---|---|---|
| River Thames | 346 | 100%
|
| River Severn | 354 | 86%
|
| River Trent | 297 | 75%
|
| River Clyde | 172 | 68%
|
| River Tay | 188 | 55%
|
| River Wye | 215 | 49%
|
| River Great Ouse | 230 | 42%
|
| River Spey | 172 | 38%
|
| River Tweed | 155 | 38%
|
| River Nene | 148 | 27%
|