Oxford United FC is currently a top the standings of the Conference National. I've been passively following their progress from afar for about the last six or seven years.
Oxford has had a rough few years. They were relegated to "non-league" back in 2005-2006 and have yet to turn it around. This basically means they are playing five levels below the English Premier league. They haven't played in the Premier League since the 80's. If you're incredibly bored or unemployed you can read more about the English Football League system here.