I would assume it would be similar to GLASS user evidence, in that you give your name & address plus the date you drove the lane, its condition and if you were challenged while you were driving it.
Its Footpath No.8 Heddington it starts at ST 992 658 and ends at ST 999 660.
I suppose it could be e-mailed directly to Wiltshire County Council ( rightsofway@wiltshire.gov.uk )
or me at greenlanes@sadlrc.co.uk, or posted to Janice Green, Rights of Way Officer, Enviromental Services Department, County Hall, Trowbridge, Wiltshire, BA14 8JD.
You could post it to me but then I will have to forward it on to them, e-mail me and I will send you my address.
Jer