Simon worked for Peter Mulberry before he retired and way back in the day I spent a couple of hours at the old workshop. I don't recall Simon working for the current Mulfab company or whether he sub contracted to them, All I do know is that Simon has great skills in welding aluminium.
May 2010 - scroll down for images.
https://www.talkmorgan.com/ubbthreads.php/topics/45148/a-morning-at-mulfab#Post45148
