AN online book of congratulations has been opened for anyone wishing to send messages to the Duke and Duchess of Cambridge following the birth of their son yesterday.

Cambridgeshire County Council has opened the book following the birth of HRH the Prince of Cambridge.

Further books have been placed in the reception areas of Cambridge City Council, Cambridgeshire County Council and Peterborough City Council for residents to leave their messages.

Anyone wishing to convey their congratulations can do so in person by calling into The Guildhall in Cambridge Market Place, Shire Hall on Castle Hill or the Town Hall in Bridge Street, Peterborough.

The online book will then be printed off, bound and sent to Kensington Palace, together with the hard copies of the congratulations books.

Messages can be left online at: http://www.cambridgeshire.gov.uk/council/congratulations