| WYE | River flowing between England and Wales |
| CONGO | River flowing between Kinshasa and Brazzaville (5) |
| TAMAR | River flowing between Cornwall and Devon (5) |
| NIAGARA | River flowing between Canada and the USA |
| OFFASDYKE | Earthwork between England and Wales running from the Dee estuary to the River Wye (5,4) |
| VALLEY | Wye -; AONB on the border between England and Wales, site of Tintern Abbey, Goodrich Castle, Symonds Yat and "the town of books" (6) |
| BRISTOLCHANNEL | Troll's beach inn constructed between England and Wales |
| SEVERN | ____ Bridge, motorway suspension bridge between England and Wales (6) |
| LUNDY | Island in the Bristol Channel between England and Wales (5) |
| SEVERNBRIDGE | Poles always positioned in game between England and Wales (6,6) |
| DYKE | Offa's ___ runs along the border between England and Wales. (4) |
| OFFA | King of Mercia who organised the construction of an earthwork between England and Wales (4) |
| MARCH | Military-style walk; move made by a chess piece; or, a border, such as one between England and Wales (5) |
| BRISTOL | Which channel between England and Wales narrows into the Severn estuary? (7) |
| RIVERDOVE | Trent tributary flowing between Staffs and Derbys (5,4) |
| ARCLAMP | Lighting device with current flowing between two electrodes (3,4) |
| CAPITALMOVEMENT | Contemplate aim devised to contain volume of payments flowing between countries (7,8) |
| TUNNEL | The Lincoln between New Jersey and NewYork or the Channel between England and France |
| TWEED | River on border between England and Scotland |
| THEASHES | Test cricket series between England and Australia and its associated urn trophy (3,5) |
