From HH go up Milkwood Road to Kennington Road and bomb up Kennignton Road. Nice and fairly traffic free. Then you end up at Waterloo and can go over the bridge, right along the embankment and up Farringdon Road but TBH I'm less familiar with that part once you get north.
From HH go up Milkwood Road to Kennington Road and bomb up Kennignton Road. Nice and fairly traffic free. Then you end up at Waterloo and can go over the bridge, right along the embankment and up Farringdon Road but TBH I'm less familiar with that part once you get north.