Greater London Authority (GLA)

This work by GLA City Intelligence (the latest update of which was published in June 2025) aims to provide the most comprehensive and up-to-date picture of London’s economic and social realities. Our latest report differs slightly from previous ones in that it highlights London’s performance against a set of ‘London-level outcomes’ that pertain to important Mayoral priorities for the capital. That...

Information   These published reports present information from the multi-agency database Combined Homelessness and Information Network (CHAIN), about people seen rough sleeping by outreach teams in London. CHAIN, which is commissioned and funded by the Greater London Authority (GLA) and managed by Homeless Link, represents one of the UK’s most detailed and comprehensive sources of information about rough sleeping.  ...

The London Energy and Greenhouse Gas Inventory (LEGGI) is an emissions inventory which quantifies greenhouse gas emissions released to the environment from activities in London. It also quantifies emissions removed through Land Use, Land Change and Forestry sector activities. It is produced on an annual basis to measure progress against the Mayor's emissions reduction targets for London. The inventory provides emissions in...

The Greater London Authority's ‘Housing in London’ report sets out the evidence base for the Mayor's housing policies, summarising key patterns and trends across a wide range of topics relevant to housing in the capital. The report is the evidence base for the Mayor’s London Housing Strategy, the latest edition of which was published in May 2018. The 2024...

Housing Research Notes are a series of analytical reports from the Greater London Authority focusing on individual issues of relevance to housing policy in London.  The most recent Housing Research Note (published in November 2023) estimates the annual cost to the NHS of homes in poor condition in London. It also estimates the cost of repairing all the homes in London that are...

This dashboard provides details of residential commencements (starts) from the Planning London Datahub (PLD). The data on the datahub is supplied by applicants and Planning Authorities. Due to the nature of how it is collected and assimilated, it is not checked for quality as it is received, and as such may require to be amended as data quality reviews are completed and specific...

The GLA Population Yield Calculator is a tool for estimating population yield from new housing development. The calculator provides users with an indication of the possible number and age of children that could be expected to live in a new housing development of a given bedroom or tenure mix. Please see the calculator’s methodology document for further details and...

This briefing presents evidence on the socio-economic impact of COVID-19 on London and Londoners​ Topics included in the briefing focus on recent data releases published in the preceding months that tell us how social policy issues are evolving in London since the start of the COVID-19 pandemic For more on the health and demographic impacts see the Demographic...

Indicative residential capacity calculators to be used with the Good Quality Homes for All Londoners draft for consultation.

Through reading this publication you will: • gain an understanding of how house prices are set in economics terms, how they are measured, and why the cost of housing matters for London’s economy and its residents • see whether incomes and earnings in London have kept pace with the costs of home ownership in London, and see how affordability may be affected...