And, credit where credit is due: this builds on an idea I got from Mark Ruddy at UCL, who wanted to look at pricing change in London and used a hex-binning approach to mitigate the problem of very small postcodes.
What I’ve done here is to scale that process up to all of England & Wales (Scotland, sadly, does not appear to have this type of transaction data). The regional maps included in this talk are each coloured according to regional gross median income, which I obtained as part of a FOI request (2014-3226, since you ask).
If you want to generate the same bins, then you’ll need the MMQGIS plug-in to generate a grid with the following properties: Left X=0; Bottom Y=0; Width=663,000; Height=1,230,000; H Spacing=750. That should give you a fairly nice layout and it’s quite handy that OSGB is measured from 0,0 so you don’t have to try to figure this all out in Lat/Long.
Anyway, here’s the talk: