Trafalgar Tavern

You're walking into Greenwich's most storied boozer, all creaky floorboards and wood panelling overlooking the Thames. The Trafalgar's the sort of place where you can catch the light bouncing off the water whilst nursing a pint, and it actually feels like you've stumbled somewhere that matters. The whitebait is properly done—crispy, delicate—and the ales rotate with actual care. It's busy without being rammed, and the mix of locals, tourists who've wandered down from the Observatory, and anyone who knows South London well enough to make the trip keeps things genuinely interesting.