Do Brits shorten "you all" to "you'll"?

Posted by prosthetic_memory@reddit | AskABrit | View on Reddit | 39 comments

Just saw a Brit comment on a post: "I can get behind you'll on this one." Then, when a few people questioned the "you'll", vs the American "y'all," they responded "This Brit shortened you'll meaning you all. Maybe it's a British thing."

So...is it?