July 2021 flooding event

Flooding event on 12 July 2021

The flooding event of 12 July 2021 displaced many of our residents and affected local businesses. The impacts are still being felt in those affected communities as residents and businesses continue to carry out repairs in their recovery from the flooding. 

Council’s Flood Investigation

The Council, as a Lead Local Flood Authority, is gathering information and will publish a formal investigation under Section 19 of the Flood and Water Management Act (2010). 

As part of the above investigation, we received over 220 responses from residents and business to a survey of properties affected. The survey was open for two weeks starting on 17 January 2022. The information gathered is helping the Council understand how this flooding event has impacted the local community, and consider potential options to manage the risk of similar flooding occurring in the future.

A map highlighting the roads where the Council understands properties were affected is shown below. While this does not mean that all properties on each road were affected, it shows the spread of the flooding across the Borough. The map should not be used to indicate individual property flooding.

List of flooded streets

List of flooded streets during the 12 July 2021 event.

  • Addison Road
  • Allen Street
  • Ansleigh Place
  • Arundel Gardens
  • Beckford Close
  • Blenheim Crescent
  • Bramley Road
  • Brewster Gardens
  • Camelford Court
  • Camelford Walk
  • Clarendon Road
  • Colville Road
  • Colville Square
  • Cope Place
  • Cornwall Crescent
  • Darnley Terrace
  • Edwardes Square
  • Elgin Crescent
  • Ellis Street
  • Elsham Road
  • Holland Park Avenue
  • Holland Park Gardens
  • Holland Park Road
  • Holland Road
  • Holland Villas Road
  • Kensington Park Road
  • Kenway Road
  • Ladbroke Grove
  • Lancaster Road
  • Latimer Road
  • Ledbury Road
  • Lonsdale Road
  • Lorne Gardens
  • Lower Clarendon Walk
  • Melbury Road
  • Napier Place
  • Napier Road
  • Norland Road
  • Norland Square
  • Notting Hill Gate
  • Pembroke Gardens
  • Pembroke Road
  • Pembroke Square
  • Pimlico Road
  • Portobello Road
  • Princedale Road
  • Princes Place
  • Queensdale Road
  • Radley Mews
  • Rosmead Road
  • Royal Crescent
  • Russell Gardens
  • Russell Road
  • Scarsdale Villas
  • Sloane Square
  • St Anns Road
  • St Anns Villas
  • St James's Gardens
  • St Marks Close
  • St Marks Road
  • Stafford Terrace
  • Stanford Road
  • Stoneleigh Place
  • Stoneleigh Street
  • Upper Addison Gardens
  • Warwick Road
  • West Eaton Place
  • Westbourne Park Road
  • Young Street

London Flood Review (also known as the Independent Review)

Thames Water has commissioned an Independent Review into the flooding that affected London in July 2021. The Council will scrutinise this review and continue to work to reduce flood risk in the Borough.

The review will comprise four stages. The Stage 1 and 2 reports have already been published and are available online at the links below.

Stage 1 Report

An objective review of the available data relating to the flooding on 12 and 25 July 2021.

Known as the ‘data discovery phase’, Stage 1 is the initial phase of the review where all the available data that will be used to investigate the flooding events is gathered and assessed.

Stage 2 Report

An investigation into the flooding mechanisms and contributory factors that led to flooding on 12 and 25 July 2021.

In Stage 2, the data and models collected during Stage 1 is used to assess the flooding mechanisms (the potential causes of flooding) that were involved in the July 2021 flooding events. The assessment of flood mechanisms will be used to help identify how significant each contributing factor was to the impact of the flooding.

This page will be updated as subsequent stages of the London Flood Review are published.  

Thames Water’s Flood Response

Thames Water has recently provided an update to the Council indicating the next steps that will be carried out. Thames Water has indicated that it will be carrying out a £10m programme to install property or street-level resilience measures to those at higher risk. As part of this, the Council understands that the following will happen:

  • Residents will be contacted directly by Thames Water to arrange a survey.
  • There will be wider outreach by Thames Water to identify properties that were flooded but may not have reported to Thames Water or the Council.
  • The survey will identify the action required for each property.
  • Residents will be provided with a copy of the survey for their records. 

The full letter from Thames Water is available on request.

The Council considers it incredibly important that any resident affected by internal flooding to their property in July 2021 reports this directly to Thames Water using the questionnaire below.

Report flooding to your property

Council Scrutiny

An extraordinary meeting of the Overview and Scrutiny Committee (OSC) was held on 11 October 2021. Following this meeting, the Chair of the OSC has set out the conclusions and recommendations of the committee members in a letter to Thames Water on 20 October 2021. You can find this on the link below.

You can also watch a recording of the meeting below. 

The flooding in July 2021 was an agenda item at the meeting of the Overview and Scrutiny Committee (OSC) held on 24 January 2022. You can watch a recording of the meeting below. 

Further developments on the investigations and their outcomes will be updated on this page.

Last updated: 13 May 2022