Boundary data and postcodes for areas and towns in UK

Hi Osm, My project has stalled and I can't seem to solve the problem. I really hope you can help me here. I would need the boundaries for UK towns and areas. I've already got great boundary data from OrdnanceSurvey on counties, districts and wards. The problem is that the wards are unfortunately useless for my project (since it's only used in elections and not by users in every day life). I'm also trying to find an alternative postcodelist to the administrative Geography in Code point open - but I can't find anything like it. It would be great to find a list that converts all the wards into areas (that are more commonly known). But I have no idea if such a list even exists. If you could help me with some of these questions I would be super grateful and I'll be more than happy to donate! All the best, Cath