Almost all local plans now are online in some form. Many are compelling visually, such as those using Esri’s ‘story books’ feature.
But 99% of them are useless for the public, researchers or the private sector as the data is not readable.
Lets say you wanted to do a search of all sites within 30km of Swindon allocated for employment use and with planning consent and over 5Ha. The only way you could do it now is to buy services from companies that, incredibly, hand digitize everything including manually from planning registers in council receptions on laptops.
The problem is that planning data does not follow standard data formats that are machine readible. If there is a standard open source and spatially enabled format this is not a problem. The problem with the MCHLG is that it does not seem to understand open source and its transparent methods for solving problems. You will not find any website or proposal for solving the problem. Instead you have a ‘clientist’ approach like you now have in neighbourhood planning, a problem is perceived, a funding stream is set up, learning is restricted to successful bidders, little is learned apart from at the Ministry about how it did not understand the problem in the first place.