Sir Tim Berners-Lee admits the forward slashes in every web address 'were a mistake'

http://www.dailymail.co.uk/sciencetech/article-1220286/Sir-Tim-Berners-Lee-admits-forward-slashes-web-address-mistake.html
 
‘Think of the amount of print that would have been saved if I had of removed the double slash.'
 

Did he really say 'had of removed' or 'had've removed' FFS ;-)