Hmmmm, lets see. Ale is OBVIOUSLY the way to go, none of this p*ss in a glass lager crap.
Adnam's Broadside - probably the best beer I've had
Theakston's Old Perculier
Courage Directors
Being from Liverpool I've gotta add Cains... not quite up to the standard of those, but a damn good beer.
At home I usually go for Bacardi and colouring (usually pepsi) or bottles/cans of the above. On a night out, Blue WKD or Bacardi Breezers (Orange, Orange, Apple, repeat til unable to reach bar). Diesel (Snakebite n Black) is great too