UK luthier Hullah makes solidbody electric mandolins (left and below), as well as acoustic/electric mandolins, mandolas, and bouzoukis (right), for Halshaw Music in Macclesfield, Cheshire. The solid e-mando on the left was actually attributed to one Brian Hullah, but I'm going out on a limb and guessing that was a mistake. Here's the contact info:

Halshaw Music
37 Catherine St.
Macclesfield
Cheshire, SK11 6ET
England
Tel +44 1625 610849
Fax: +44 1625 267136
E-mail: sully@halshawmusic.co.uk