Size 16 - gosh! I don't want to dance with him then.
A little while ago I bought some boots from
www.newenough.com and they even say they pride themselves on assisting people who are hard to fit. So perhaps give them a go. By the way, they were great to deal with, prompt service, never left in any doubt as to where the boots were at any time! It was great.
Cheers
PS I only have dainty little size 7 or 40 Euro feet so generally not a problem to get boots for me. If that seems big, I am 6 feet tall so it isn't!