Sorry for the late reply, and sorry, I'm not in the UK. I'm using UAVP-NG (http://ng.uavp.ch/ http://ng.uavp.ch/). It's open source, there is a custom operati

Sorry for the late reply, and sorry, I'm not in the UK. I'm using UAVP-NG (http://ng.uavp.ch/ http://ng.uavp.ch/). It's open source, there is a custom operation system (NGOS) and half a dozen hardware revisions and also a few side projects such as a 4x-BLC. There are over a dozen people actively working on that project now and I believe they've created a nice, easily extensible, platform to base future work on. On the downside, it isn't the cheapest project. For students like me that can be a bit of a hurdle. Also, you're likely not going to get around soldering the PCBs yourself. (It looks much harder than it is.) But do have a look around and check the various projects out for yourself before you pick one. BTW, if you have any questions, please do shoot me a mail. I like mail. Or drop by #uavp on Freenode. The people there are mostly harmless^W^Wvery friendly (as long as you've read the FAQ first ;) [edit: And now we're waaay offtopic. Sorry.]