On the main menu which runs across the top of each page, the CONCEPTION and CONSTRUCTION sections contain everything I have on the architecture of the Barbican estate.
(Architectural students often ask me questions, but I am not an architect myself, and what I have put on the website is all I have to offer I am afraid.)
You may find this book helpful.
Other books are highlighted in my pages on MODERNISM and BRUTALISM .
The BLOCKS section of my website gives more detail about the individual blocks, and FLAT PLANS & FLAT TYPES provides descriptions and plans for every flat type in the estate.