VolkerFitzpatrick and client Reef Group, in partnership with Bennetts Associates and HG Matthews used the excavated subsoil to produce the low-carbon Strock earth blocks that clad the interior walls of the basement. This product is a natural alternative to concrete that is free from toxic substances, creating a healthier interior environment. At the end of their life, the earth blocks can be ground up and reused as a raw material in other products.

The Apex is the largest structure in the UK to utilise this earth-based construction technique, showcasing a circular and environmentally friendly approach to construction that raises the bar for sustainable development in the UK and internationally.