Boris Johnson and Carrie Symonds have announced the birth of a 'healthy baby boy at a London hospital earlier this morning'.

Both mother and baby are doing very well, their spokesman said.

A spokesman for Boris Johnson and Carrie Symonds said: 'The Prime Minister and Ms Symonds are thrilled to announce the birth of a healthy baby boy at a London hospital earlier this morning. Both mother and baby are doing very well.

'The PM and Ms Symonds would like to thank the fantastic NHS maternity team.'