Food Standards Agency
The Food Standards Agency have links to all the major regulations together with many safety tips and news items. They are the definitive authority for UK food business.

Food Standards Agency (login to view)

Local Authorities Coordinating Office on Regulatory Services (LACORS)
LACORS is the Local Authorities Coordinating Office on Regulatory Services. Assists the 467 local authorities in the United Kingdom to improve the quality of trading standards and food enforcement.

They have a useful business section, which covers things like licensing laws.
Local Authorities Coordinating Office on Regulatory Services (LACORS) (login to view)

NORMAPME
Standards for small business can be seen on the NORMAPME website. They deal in Standards for small business on a European basis.

NORMAPME (login to view)

Other regulations
Website that covers Environmental Issues, designed for small food and drink businesses.
Other regulations (login to view)

UEAPME
The organisation that represents small businesses across Europe. See especially the food section under sectorial policies for position papers and potential legislation that could affect SMEs.
UEAPME (login to view)