Project will make the famously confusing London landmark easier to navigate and more accessible

“E

verything leaks,” says Philippa Simpson, the director of buildings and renewal at the Barbican, who is standing outside the venue’s lakeside area and inspecting the tired-looking tiles beneath her feet.

Water seeps through the cracks into the building below and serves as a reminder of the job facing Simpson and the team who are overhauling the 43-year-old landmark.

The first phase of the project will cost £231m, and Simpson – who did a similar, if less daunting, job for the Young V&A in east London – hopes it will be finished in time for the 50th anniversary in 2032. The overall bill is estimated to be £451m.