Stephen

You are welcome.

In case you have not seen this.

ARCHAEOLOGY SOUTH-EAST

Scroll down to Hailsham and see

Historic Building Recording and an Archaeological watching brief on land at 63-65 North Street, Hailsham, East Sussex

http://www.ucl.ac.uk/archaeologyse/resources/report-library/pdf-library-table-eSussex

It has an 1811 map showing the location of the barracks. Start page 14.

Good hunting

Ron