Peterborough (PE) East of England Cambridge (CB) East of England Chelmsford (CM) East of England Colchester (CO) East of England Hemel (HP) East of England Ipswich (IP) East of England Luton (LU) East of England Norwich (NR) East of England Southend (SS) East of England St. Albans (AL) East of England Stevenage (SG) East of England