Hi - been a while since I last saw this thread heh.

Since I last posted - We still run 24/7 email support but shut down live chat at around 2am (GMT), The office mailserver has become a fair bit more active during the night now too, mainly as we have taken on more U.S clients who obv are 8 hours behind.
Having someone up around the night is also conforting as they can keep an eye on the network and see an issue way before anyone at the dc does, like last time we had a issue (sometime back in may iirc), a router had developed a problem overnight and we were able to get the duty engineer of his ass to do something about it - and prob wouldnt have noticed it for another 5 mins.