Unfortunately the switches quoted were not the right type as they need to be the horizontal type like this:

http://uk.farnell.com/multicomp/sk-23d05-g8/switch-2p3t-0-3a-50vdc-r-a-tht/dp/2291179

but the six pin (not lug) type. (The Multicomp ones shown above are no longer made apparently.)

I have searched high and low, but my google-fu has been exhausted. Any ideas/leads gratefully accepted!