Thanks for the suggestion TRINI, I see what you mean.
They were all SOOC, so using the camera's B&W setting. Some are using B&W + a colour filter, also in-camera. When looking through them I tried to bump the contrast on many of the B&Ws, but in then end I settled for the SOOC look. I suspect my monitor is too dark, so they may look too washed out on a properly calibrated screen.
Your results look better to me than what I got from a quick 'Shadow' increase in Picasa
Thanks for playing around with them