You asked

I would like to know how many boys were born in the UK in 1997.

Additionally I would like to know how many of those were names Dennis or Denis.

We said

Thank you for your request.

We are responsible for publishing birth statistics for registered in England and Wales. National Records Scotland (NRS) and Northern Ireland Statistics and Research Agency (NISRA) are responsible for publishing the number of births registered in Scotland and Northern Ireland. They can be contacted at foi@nrscotland.gov.uk and info@nisra.gov.uk respectively.

In 1997 there were 329,577 male children born in England and Wales. This information can be found in Table One of the following birth summary tables: https://www.ons.gov.uk/peoplepopulationandcommunity/birthsdeathsandmarriages/livebirths/datasets/birthsummarytables

Additionally, please see details below from a user requested adhoc for males named Dennis or Denis in 1997:

  • Denis: Ranked – 1052, count - 13

  • Dennis: Ranked – 375, count - 61

This information can be found via the following link: https://www.ons.gov.uk/peoplepopulationandcommunity/birthsdeathsandmarriages/livebirths/adhocs/008710babynames1996to2016

If you would like to discuss your requirements further, please contact health.data@ons.gov.uk.