I think newboy has got it, but since they don't seem to provide a map on their site, it's a bit difficult to check. Bambulous, your one is off the M6, which might be visible from the M6, but not the A14. Since newboy and I concur on this - put mildly, it's the only site that we don't know where it is and all other possible sites are too far one way or the other either side - I think that's probably what it is. But with that kind of website.... I'd be inclined to steer clear!
Case closed.
Case closed.