Randomness Guide to London Menu

Zone 2 rail station on the Gospel Oak to Barking Line.

It's worth noting that Archway Station on the Northern Line is just along the road, and that interchange between these two stations is a valid "out of station" interchange on Oyster PrePay (i.e. you'll only get charged for one continuous journey, rather than two separate ones). (Source: uk.transport.london)

See also:

• Wikipedia entry on Upper Holloway station