Fraser Bond are the leading lettings and property management agents for Gridiron - London N1C. Gridiron at One Pancras Square is a 55,000 sq ft office building in King's Cross, London N1C. This Grade A island office building has a prime spot at the gateway to the King's Cross development. The building developed by King's Cross Central Limited Partnership is ca 55,120 sq ft net over 8 floors. A typical floor is 7,050 sq ft net with 600 sq ft of south-facing balconies.