Nice find over on British Army Lineages – a description of the army camping on Blackheath from 1697:
Partial transcription from my squinting at the text (shout if you see mistakes, or manage to transcribe the rest!):
A description of the camp on Blackheath which begun on Thursday the 1st of July 1697.
On Tuesday the 1st day of July 1697, the 7 Regiments of Foot marcht to Black-heath in the County of Ken, about 6 Mile from London’ in order to Encamped, and having the Ground set out for the setting up their Tents’ and on Thursday and Friday the 1st and 2d Days of July, the 7 Regiments of Foot came all into the Camp, then the Camp was full, which consisteth of 7 Regiments. Lieutenant Colonel Withers Brigadier for this Camp, acteth as chief. The distance of each Regiment as they are Encamped on the Heath is 24 Paces; and between the Regiments they are xx Paces. The distance of the Foot Companies one from another, is about 4 Paces in the Front, and 12 Tents in File, two Foot between every Tent; in length 813 Paces from thence to the Brigadiers Tent.