Probably not quite what you're looking for, but the main church in Chesham (who's name escapes me, NGR SP9501), appears to be built upon a circle of puddingstones.
Most of the main pillars have a sizable puddingstone at the base. Some photos can be found here: http://www.imperfect.freeserve.co.uk/Chesham/ though they'll be disappearing in a few weeks (the photos, not the puddingstones!), so grab 'em quick if they're of interest!