I have been playing around with some different sources of speed limit data in the UK and have created a map using OSM (of course). The lack of a complete UK map which can be accessed relatively cheaply is a real problem, the only 'accurate' map I can find costs >£30k per annum to licence and that doesn't have anywhere near 100% coverage. I think there could be a good opportunity here to build on the various sources I have found so far and get something a whole lot better. In fact, I may even be able to get some funding to do it but the project plan requires the final database to be sold to cover all of the costs. If my new database is based on the OSM layer then correct me if I'm wrong but I can can't stop the customer redistributing it for free. E.g. I could sell the new map for £500 with all of my hard-collected data and the user could simply give it away on a free download. I had planned to produce a free-to-view map for the public which would have been my way of 'sharing' the results but it's the raw data that holds value. Can someone put me out of my misery?

I have been playing around with some different sources of speed limit data in the UK and have created a map using OSM (of course). The lack of a complete UK map which can be accessed relatively cheaply is a real problem, the only 'accurate' map I can find costs >£30k per annum to licence and that doesn't have anywhere near 100% coverage. I think there could be a good opportunity here to build on the various sources I have found so far and get something a whole lot better. In fact, I may even be able to get some funding to do it but the project plan requires the final database to be sold to cover all of the costs. If my new database is based on the OSM layer then correct me if I'm wrong but I can stop the customer redistributing it for free. E.g. I could sell the new map for £500 with all of my hard-collected data and the user could simply give it away on a free download. I had planned to produce a free-to-view map for the public which would have been my way of 'sharing' the results but it's the raw data that holds value. Can someone put me out of my misery?