Normally an expensive tap set should have spares available but there's not much to go wrong with a spout. I've never been able to find a standard for taps but I'm no expert on them. Usually the cheaper brands are easier to replace than track down spares.
It's an MGS T45 and the swivel joint in the spout is leaking (a lot) when you run the water. I'm going to take it off today and see if I can get inside it at all, as I assume once there it should be simple enough to replace the seal...
Normally an expensive tap set should have spares available but there's not much to go wrong with a spout. I've never been able to find a standard for taps but I'm no expert on them. Usually the cheaper brands are easier to replace than track down spares.