The Brownfield site register
The Brownfield site register is a list of previously developed (brownfield) land in Brent, produced in accordance with the Town and Country Planning (Brownfield Land Register) Regulations 2017.
Check the Greater London Authority map for the locations of all the brownfield sites included within Brent's Brownfield Register.
You can also download the current edition of the register for Brent as a csv file. Data is released under the government's Open Data agreement.