Gatwick North and South Terminal

Gatwick Airport Limited required reliable cost advice for major development across both the South and North Terminals. The scope combined new and reconfigured space, demolition, utility diversions, terminal integration and phased movement of the airside and landside boundary. Delivery also had to maintain baggage, jet fuel and stand utility operations while managing security, restricted access, logistics and passenger continuity. Multi-storey landside extensions and airside departure lounge works added further complexity, with much of the activity planned around out-of-hours working.

G&T provided Cost Management and Infrastructure Management services, preparing the South Terminal RIBA Stage 2 cost plan before being appointed to develop the North Terminal RIBA Stage 3 cost plan. We separated base construction from allowances for access, security, logistics, phasing and restricted working, and tested key assumptions against aviation benchmarks and current market evidence. This created a consistent and traceable basis for both programmes, covering demolition, utilities, terminal connections and the operational premiums associated with live-airport delivery.

The resulting cost plans have given Gatwick Airport Limited a consistent basis for assessing affordability across both terminal programmes and a clearer view of the additional costs associated with working in a live airport environment. The analysis has also supported governance, assurance and business-case review by making key allowances and assumptions transparent. G&T’s input has helped create a comparable cost basis for the South and North Terminal programmes, supporting design challenge and more informed investment decisions.