http://www.pachube.com/ – I mentioned these folks a couple years ago, but they look like they’re doing better. They’re what I’d call "casual, next-gen SCADA", and are definitely part of the Internet-of-things movement.
They’re based in London.
They do EEML:
Extended Environments Markup Language (EEML)
This site provides information about Extended Environments Markup Language (EEML), a protocol for sharing sensor data between remote responsive environments, both physical and virtual. It can be used to facilitate direct connections between any two environments; it can also be used to facilitate many-to-many connections as implemented by the web service Pachube, which enables people to tag and share real time sensor data from objects, devices and spaces around the world.