Sturmey Archer have for 2009 made some new shifters including a bar-end shifter and a thumbie for the three speed hubs according to the 2009/2010 catalogue.

The Bar End shifter is part number HSJ966.

The Thumbie is HSJ965.

They do a trigger shifter, part number HSJ943 and two Twist-grip shifters part numbers HSJ927 & HSJ939.

You may have to run a bolt on pulley to route the shift cable where you want it. The part numbers are HSJ521 (28.6mm) or HSJ520 (25.4mm)

Hope this helps.