The Times Educational Supplement (UK) runs a splendid article about the ICT infrastructure on the Isle of Man (just off the UK mainland).

In total Graham is responsible for 3,900 client computers (desktop and laptop). As well as 115 servers, 40 networks, 300 wireless access points (Apple Base Stations) and numerous other pieces of equipment. This is all done with just two technicians.

Well, they use Apple of course...

Link: UK Educational Resources - TES - The Times Educational Supplement .