Wide-Boy is a person who is able to obtain or make almost anything happen (usually by nefarious means). A Wide Boy is a cut above the common spiv who dealt largely in Black-Market goods and racketeering. The term Wide Boy was in common use prior to 1936

Wide boy ususally refers to a working class male who lives in London, and who lives by their wits and wheeler dealings....

A guy about town. Someone who is a bit of ladies-man! Likes the party lifestyle! Into a few dodgy dealings but still is popular and trendy.

standard kingsize rizla instead of slims. allows for a wider but shorter joint.

a twat

a large chocolate log, which takes it name from being exteremely wide and chocolate-like.

Someone who dabbles in many areas.
Referring context is usually in work.