I'm assuming they mean go down the A421 until the first flyover-that-you-could-actually-access-via-a-slip road, bear left onto St Neots Rd (old A421, signposted 'Gt Barford'), heading north through Gt Barford back to Black Cat, then do loop again etc.
Always confusing :/
I'm assuming they mean go down the A421 until the first flyover-that-you-could-actually-access-via-a-slip road, bear left onto St Neots Rd (old A421, signposted 'Gt Barford'), heading north through Gt Barford back to Black Cat, then do loop again etc.