Hi Mex, 

This is also supported via NSG data: https://portal-gb.one.network/prd-portal-one-network/data/dsp_usrnDetail.cfm?r=(46244,2)&lyrType=st

If you sign up to one.network. You will see this ( i also work for one.network, we pull this data from GeoPlace).

You also mentioned that Google maps was a point of reference too ?