I searched for a set for ages and all I could find were individual jerseys. Ended up getting onto a guy in the states who is part of the UD team. After a lot of persuading and a lot of cash he got the shorts signed for me. Haven't seen the shorts signed at all before.
Unfortunately because of the size the display case would need to be and two kids under 3, I don't have anywhere to put them so would prefer someone to be enjoying them than have them locked away