Many thanks to all of you. I really appreciate the support. We're working up some new surprises that we hope will be ready by year's end. I think JB customers — those who gig professionally or semi-professionally, especially — will be excited.
Rob: as for a power adapter, you should look for a 9V, 500mA, 2.1 mm x 5.5 mm barrel, center pin positive polarity adapter. Give those specs to any electronics retailer and you should be set, assuming it meets UK voltage requirements, about which I'm unsure.
One commercial power unit we can recommend is the Voodoo Labs Pedal Power, as long as you use their optional reverse polarity cable. On their website, Voodoo Labs even cites the JangleBox among the handful of pedals for which that cable was intended.
U.S. customers can contact me directly for a power adapter or our own reverse polarity cable. Though it's not yet on our website, it will be once we're ready with the "surprise" I mentioned above. Go to our website for contact information:
http://www.janglebox.com