Several places. For starters try Blind Tiger, Hudson at
W 10th or d.b.a. on 1st. ave near 2nd. Try any domestic
cask micro over anything actually imported from the UK
- some of the UK stuff is not actually real ale but
"keg" beer being dispensed by hand pump. Besides, I'm
not sure real ale travels well. Several other places
for real ale, e.g. Sparky's on Court St. in B'klyn.
NYC is lagging behind some other areas in real ale
appreciation (e.g. Philadelphia).