Fantastic bike in amazing condition - I was pleased with mine but this is a completely different league..
Not quite sure why, but I think the Regal would somehow spoil the classic good looks of this bike although I'm not exactly known for my aesthetic sensibilities which probably means that it would go perfectly. Interestingly (then again, perhaps not), my recently arrived Gios also came with a Brooks saddle. At first I wasn't keen but it has grown on me and pretty sure that it will stay so self indulgently I've posted a photo below.
Is there such a thing as white bar tape that doesn't get filthy the second you touch it?
Bike Ribbon looks pretty good and is easy to clean, especially compared to cork etc. Wiggle have it very cheap http://www.wiggle.co.uk/bike-ribbon-pro-bar-tape/
, again a photo of it fitted below.