Project Eaton Square Client Leconfield Location Eaton Square, Belgravia Borough Westminster Estate Grosvenor Value £5m+ Design Team Weldon Walshe, Leconfield, RLA Contractor Trenchco Structural Solution Secant piled perimeter wall acting compositely with RC liner. Piles installed through existing RC edge footing, using existing RC as guide wall. Building above to be jacked up during basement works, in single sequence, to transfer existing loads onto new piled foundations. Top-down construction.