To get to New Workshops at RAF Halton you need to be on the B4009 from Wendover towards Tring. The postcode HP22 5PG may get you on this road, but I can’t guarantee it.
When passing RAF Halton look for a red jet aircraft (a Hawker Hunter) outside station headquarters and turn left down Chestnut Drive. All entrances to the left are blocked with security fences until you have passed all the buildings where there is a left turn. Turn left and immediately left again so you are parallel to Chestnut Drive. Ahead of you will be a Security Barrier with a car park to the right. Cars without a security pass will not be permitted through the barrier.