It flows through the village of Tilbrook, to Kimbolton, and joins the Great Ouse at St Neots.

It is known as the River Til in its upper reaches, tributaries include the Pertenhall Brook.

[1][2] Rising right on the Northamptonshire-Bedfordshire border at the west of the parish of Newton Bromswold, it flows north-east to cross into Bedfordshire at Yelden and then into Cambridgeshire at Tilbrook.

It next flows past the parish church of St Andrew to the west of Great Staughton, encircling the village to the south.

[4] Media related to River Kym at Wikimedia Commons