"A recent research project based at University College London (UCL) has investigated the distribution of surnames in Great Britain, both current and historic, in order to understand patterns of regional economic development, population movement and cultural identity. This website allows users to search the databases that we have created, and to trace the geography and history of their family names."

Surname profiler

Shows map distribution maps of either 1881 and 1998..

Oh heck - I wish I hadn't looked.
Seems my family surnames both come from down south on the 1881 list.

On both 1881 and 1998 most common place to find my name is in Aberdeen/Aberdeenshire - not a surprise really since that's where my family originated. Also noted that my other grandparents names as far back as I can go are all celtic, either Scots (mainly) and Irish (some).