As per an earlier comment, here's the Sausage and Bread Top 5 list. Due to my location, I'm afraid the list can only really cover Soho and central London. So here goes...
5 - BAR BRUNO
The speed at which it's made is the secret to the sausage sandwich from this Soho institution.
4 - DOLCE CAFE
A better than average cafe and restaurant, with good quality ingredients.
3 - OLLY OLSON (Swedish Korv hot dog)
A hefty hot dog served with mashed potato on top.
2 - CAFE SOHO
Currently the best sausage sarnie in Soho. Review now up.
1 - PAUL (salami baguette)
Controversially, the Paul salami baguette is not what many would consider a 'real' sausage sandwich. You could go as for to say it's a bit 'fancy'. But I cannot fault this sandwich and it does fulfill the critieria. Great ingredients, great flavours. The Paul sandwich demonstrates what is so appealing about the sausage and bread combination.
The idea of combining sausage with bread is a simple one but it can result in something quite spectacularly tasty. Making a truly great sausage takes skill, attention and great ingredients. The same goes for making really good bread. So, the marriage of a top quality sausage and top quality bread actually produces something rather special. It's a simple concept that has the potential to be something amazing, depending on how much thought and effort you put into it.