ALT Why don't other councils publish their address data, as Leeds has done? There are a couple of possible reasons I can think of. … Leeds City Council is one of a relatively small number of local authorities that have taken a proactive approach to realising the potential for open data more broadly. It may be that other local authorities could publish their address data in the same way, but simply haven't the internal motivation to do so. It may also be that Leeds is more confident than other authorities that it can lawfully publish its address data under an open licence, because it has a better understanding of the lineage of the data in its LLPG and/or has managed that data in a way that distinguishes the Council's own intellectual property from IP that might be subject to third party claims. Councils with less expertise in those areas are prey to external advice, from Ordnance Survey and other organisations with a motive to discourage open publication of address data.