From chatting with one of the HSNGRS members over Instagram earlier this year they seem to be amicable with the SRT. Although, there is the awkward situation where each alternate station site is owned by a different organisation (except for Walberswick which neither group owns). The HSNGRS owns the Halesworth and Blythburgh sites, the SRT owns the Wenhaston and Southwold sites. This could cause issues regarding the possible (?) construction of the full route in future.