The first Boase to move to London was Henry Boase the banker from Penzance. It is his family that also created the original links with Scotland and New Zealand.
10 of Henry’s 13 children were born in London between 1796 – 1810. However the family then returned to Penzance so that link to London was lost. However by the middle of the 1800’s there were several Boase families living in London.
It would appear that much of this movement was for economic reasons. Families feeling that they will have a better life if they moved from rural Cornwall to the capital. I am sure that for some families this was the case but many of them ended up living in the poorer areas of London and must have regretted moving from the fresh air of Cornwall to the slums of London.