The main surnames I am researching are:

CAWTHORN - from Emneth, Three Holes & Christchurch, Cambridgeshire, U.K.
[+ Cambs/South Lincolnshire border + Cambs/West Norfolk borders.]
late 1600s onwards.

SCOTT - from Welney 1700s onwards; and Christchurch, Cambridgeshire
early 1800s onwards.

PALMER & DeSilva/DaSilva PALMER - from Burwell, nr Cambridge - 1600s onwards;
Methwold, West Norfolk - 1851 onwards
Hilgay and neighbouring villages, West Norfolk - 1880 onwards
Wisbech, Cambs. - 1882 onwards
Rawstenstall & Rossendale, Lancs. - 1865 onwards
Fleetwood, Lancs. - abt 1915 onwards

SCALES - from Baldock area, Hertfordshire - they've been there a rather long time, but I don't know very much about them

WATSON - from Barton Bendish & Downham Market, Norfolk - from about 1800 onwards

That's enough, I think