Here's an easy to understand list for the vaccinations needed as at April 1 2005. The original data can be seen .
DTP/DTap; may include DT: Required for children 2 months - 6 years of age only.
TD: Required for anyone aged 7 years or older.
Hib: Required for children aged 2 months - 4 years of age only.
Polio - IPV or OPV: Required for children ages 2 - 17 years of age only.
MMR: Required for all persons 12 months - 64 years of age if born after 1956.
Hepatitis B: Required for all children from birth - 19 years of age only.
Varicella (Chickenpox): This vaccination is not required for any UK applicants due to unavaliblity.
Pnuemococcal: PCV - Required for children 2 - 23 months of age only. PPV - Required for adults over 65 years of age only.
Influenza (Flu): Required for adults aged 50 years or over. Required annually during each flu season.