I am a Norf Londoner through and through. I used to venture south of the river occasionally when I used to ride around London for my blog, but I never developed any sense of route planning. I now have to venture abroad into the badlands, a trip from home to Finches Emporium, 25-27 Perry Vale, London SE23 2NE (from E12 5EL - with skis tied to the bike). The route planners I've looked at are basically pants. My inclination would be to cross the Woolwich foot tunnel, and wiggle my way from there, which will get me there for sure.
But, given my ignorance, is there a better/nicer option? Speed isn't an issue, looking for pleasantness. I was thinking maybe better to go into town and cross Tower Bridge?