Description: Exactly what it sounds like... a UK-style pub
System: It works the same way as it does in the UK. So find a spot to stand or sit (free seating), order and pay at the bar, and Bob's your uncle. Maybe someone will bring your drinks over for you.
Budget: Expect to pay 500-1000 yen per drink at the UK-style pub. There should be no charges besides what you order.
Making friends: Allowed