"Passinitly intrestid in 'istry" metal detectorists may be, but the male ones are equally passionately interested in discussing and displaying the hardware. So it is not a bit surprising to find an article about detailing the equipment used in filming the series by the firm that supplied some of the props.
Louise the Danebury Metal Detecting Club member and Paul, member of The Antiquisearchers are using our Garrett Ace 250. Andy finds his first gold with the superb XP Deus and Garrett Pro-Pointer points him toward the treasure. Sophie, young History student, chose Eurotek for her first metal detector.Conspicuously absent was the Power Rangers Detector which figured prominently in the sixth episode.
[...] Other metal detectors appearing in the show like Viking used by Becky – Andy’s girlfriend, Hough and Varde – DMDC members and Minelab CTX 3030 used by Lance, Terry’s Minelab Safari and Russell’s Minelab X-Terra are also available to purchase in Regton shop.
Regton Detectors, 'Detectorists – gone but not for long', 8th November 2014.
UPDATE 9th November 2014
Heritage Action have a short item on this too:
Regtons, proud suppliers of metal detectors for ALL purposes? Metal Detector retailers Regtons are jubilant that a lot of the detectors used in the TV show Detectorists was supplied by them. Some items that they sell didn’t appear in the show though – the night vision equipment so beloved by criminal nighthawk detectorists. There’s going to be another series of the show and nighthawking is bound to be touched upon. Let’s see if the proprietors of Regtons boast that they’ve supplied equipment for THAT episode!