Artistic illumination of the Holborn Viaduct over Farringdon Street, comprising the installation of: 267no. lighting components to the Holborn Viaduct; installation of 3no. lighting components to the Pavilion to the south-east of the Holborn Viaduct (24 Holborn Viaduct); 3no. lighting components to the Pavilion to the north-west of the Holborn Viaduct (50 Holborn Viaduct) and the installation of pigeon netting to the Holborn Viaduct.