Hello Chris,
Noted that u probably live nr Eastbourne (hopefully) re Sanitoriums, do u know of one at 123 Church St. Eastbourne, My grandfather died there of heart disease in Dec 1930, but he lived at 76 Pevensey Road, Eastbourne. There was no PM so he must have stayed there to be treated. He was a Commissionaire and his name was Herbert William Sennitt. Hope u can help.
Regards Margaret.