Very important: here’s a link to the firing times which you should always consult beforehand. Rights of Way will always be closed when there is firing.
The Imber Range Perimeter Path is open access but not all of it is bridleway. For example you could start at Westbury White Horse where there’s a large car park, continue to the A360, cross over and continue to Casterley Camp. If there’s no firing then continue on this track which heads South. Easy to pop into Netheravon where there’s a pub and a convenience store. Alternatively continue on this track to Larkhill. Head for the Bustard Inn (no longer a pub) and continue North on a RoW which cuts across the middle of the firing area, this takes you to Redhorn Hill. Amazing views, real feeling of remoteness and rusting tanks to be seen.
When you reach the A360 walk along the grass to the Robber’s Stone which is a memorial. Cross over to a RoW (not the Imber Path) through The Warren and continue pass the transmitter. At the junction turn L on the Wessex Ridgeway by Strawberry Hill and continue up to the ridge. Turn R to go back to the White Horse.
https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/27468/SalisburyPlain.pdf
When Imber Range is open the access points are White Horse Westbury (not suitable for cars), Gore Cross (on the A360), Warminster and Heytesbury (unsuitable for cars).
Important!! When Imber village is open please do not enter into buildings apart from the church, we don’t want to see access to Imber jeopardised. There are security patrols now.
The church is worth a visit and there are displays detailing the history together with documents from the War Office. Sometimes there are bell ringers which is great to hear. Refreshments are available namely tea, coffee, hot chocolate and squash plus biscuits. There is no running water, gas or electricity here!
In August the Imber Bus will be running although the date hasn’t yet been confirmed. Here’s last year’s info:
https://imberbus.wordpress.com/
There’s also public access to the area between Chitterne and Shrewton together with East of the River Avon although some has live firing the closer you get to Bulford.
Hope this makes sense!