Nowhere near im afraid, a good 3/4mile on foot using the public roads. Leave Herston Halt via the steps/ramp and turn left go over the bridge and continue until you reach the main road (A351), turn left and carry on along the road, not turning off anywhere (unless you fancy a swift pint in the Globe Inn !), you will then cross over the railway again on an overbridge, and a few yards afterwards, you will see the industrial estate on the left, Herston Works is by far the largest building on the site so you cant miss it ! The works has no rail access at present, so everything has to come in and out by road, but I understand there are plans to provide a connection at some time in the future. There is not much difference in time/distance if you were to walk from Swanage really though
