http://www.marksandspencer.com/18-posh-dogs/p/p60045866
Best you are likely to get in the UK , speaking from a regular Oktoberfest goer
I like those too, but have a preference for the waitrose free range jumbo pork sausages which work well if smoked on a decent BBQ.
http://www.waitrose.com/shop/DisplayProductFlyout?productId=275752
They do a foot long version in the BBQ season as well.