Be aware that the lane between Ormiston and Cousland has recently been closed for 10 weeks (from 10 May) at the Ormiston end. It is possible to walk down by the side but it is a few 100 metres and won't be pleasant when wet. It's due to a new housing estate being built.
The good news is that the council has been patching and resurfacing in that area (and hopefully round by Airfield Farm