Managed 4 on 28R at Heathrow many moons back:
#1 Cleared to Land, rolling way down the far end
#2 Land After
#3 After the Landing lineup and hold from full length
#3 After the Landing lineup and hold from block 16.
Shame the bossman was up visiting, he didn't seem impressed.
I guess 5 could have been possible on 28L if you throw a "crosser" into the mix.