Thanks for letting me know that Pete, it would have been a shame to walk past it thinking it was not accessable.
I will stick to the strip by the hedgerows.
Is it possible for me to walk past Silbury Hill along the A4 and walk back to Avebury along the Beckhamptom Avenue?
If so would I need to walk as far as the roundabout where the A4 and the A361 meet?