Hexham lies to the south of the river tyne between newcastle upon tyne and carlisle on the a69. the workshop and showroom are situated in broadgates, a side street close to the centre of the town.. Here at visit hexham we take your privacy seriously. with your agreement, we'd like to email you information about our news, events and businesses, and if you're happy for us to do so, please tick the box below:. Find opening times for the potting shed in 1-3 broadgates, hexham, northumberland, ne46 1qn and check other details as well, such as: map, phone number, website..