Can someone help me understand some of the British coins?

I currently have a 2 pence coin, a 2 pound coin and three 1 pound coins. How much do I have?

I stumbled upon these coins in my penny jar. Every year I count how many US pennies I collect from the change I get from actual purchases; I'm not allowed to get pennies from somewhere on purpose, from Jan 1 -Dec 31 (Sidenote: I collected 716 )

EDIT: Probably should change the title to Understanding British coins)