Wigram's Turn Marina sits at Napton Junction in Warwickshire, near the market town of Southam, at the historic crossroads where the South Oxford Canal meets the Grand Union Canal.

The junction has been known as "Wigrams Turn" since at least the 1930s, a name derived from John Wiggerham, the first toll keeper appointed there around 1800. The tollhouse at the junction remains a well-known landmark for boaters.

The marina's position makes it a versatile base for canal cruising, with routes radiating in several directions: north along the Grand Union toward Birmingham, south along the rural South Oxford Canal, east toward Northampton, or onto the North Oxford and Ashby Canals.

Napton Reservoirs, which historically fed water to the canal system via an open channel opposite the marina site, lie close by. The surrounding setting is open countryside, with local villages and road links within easy reach.