You asked

Please provide weekly mortality statistics for Greater London from 1975 to 2015.

We said

Thank you for your request.

We publish provisional weekly death figures broken down by age-groups, sex and regions for England and Wales for 2010 to 2018. These figures are based on deaths registered in a calendar year;

https://www.ons.gov.uk/peoplepopulationandcommunity/birthsdeathsandmarriages/deaths/datasets/weeklyprovisionalfiguresondeathsregisteredinenglandandwales

We also published an ad-hoc on weekly provisional figures on deaths registered in England and Wales for 2005 to 2015;

https://www.ons.gov.uk/peoplepopulationandcommunity/birthsdeathsandmarriages/deaths/adhocs/005315weeklyprovisionalfiguresondeathsregisteredinenglandandwales2005to2015

If this does not meet you requirements then you can request weekly deaths figures by specific age groups for Greater London from 1975 to 2015. Special extracts and tabulations are available to order (subject to legal frameworks, disclosure control, resources and agreements of costs, where appropriate). Such enquiries should be made to:

Vital Statistics Outputs Branch
Office for National Statistics
Segensworth Road
Titchfield
Fareham
Hampshire
PO15 5RR
Tel: +44 (0)1329 444 110
E-mail: vsob@ons.gov.uk

As this information is already available to you via this route, we consider that s.21(1) applies to this request and the information does not have to be supplied under the terms of the Freedom of Information Act. S.21(1) is an absolute exemption and no consideration of the public interest test needs to be applied.