Wide bars

[PurpleFrog]

Mary Bars with Phorm g510 grips are 700mm and a fantastically comfortable combination. The Phorms are an Ergon variant designed for swept bars - you'll probably need to order them from bike24 or another German supplier.

(Let me know if photos will help - but, hey Marys Bars: you've seen them!)

 

[Rob H]

Look what I've found:

http://www.sjscycles.co.uk/humpert-town ... prod27372/

 

[Rob H]

Even better:

http://www.ebay.co.uk/itm/X-LITE-XLR-PR ... 2c90c7cc63

Nobody bid against me

 

[Max Mudroom]

Sorry this isn't quite what you asked for as it is a low riser bar not flat but I think it is suitably retro in style. I wanted a slightly wider bar too and this was my solution, Lapierre XC bar, 620mm width and under £10 from CRC:
http://www.chainreactioncycles.com/lapi ... -prod85889

Brand new so no safety worries, 25.4mm clamp. Awful graphics though so I got some wet & dry sandpaper and took the anodising off then polished with Autosol, took me about 1/2 hour to get it polished up and retro-looking.
Don't have a great pic but you can see it here:

 

[secret_squirrel]

Even better:

http://www.ebay.co.uk/itm/X-LITE-XLR-PR ... 2c90c7cc63

Nobody bid against me

Another pair of them at 610mm on the bay now. 191407574115

Two shorter sets on there as well to divide the bidders