For those of us with wide calves. Mine are 16.5 inches round.
There are loads of choices out there, not all affordable, some non-leather, some not even that nice.
Usual suspects include Duo and J Crew (£££), Evans, Next, Clarks (££) etc.
Last year I got lovely Duo from the outlet at £75 and Asda black leather for £40. This year I wanted tan or brown long boots, the Asda version is lovely but wouldn't zip up. Today I'm collecting the M&S leather boots in brown. How much to bet they won't fit either? 
Anyone like to chime in?