Case Study // Quadrant 4, 12 Sherwood Street – City Centre

In the summer of 2013, Erith were employed by Crown Estates to carry out the asbestos removal and strip out works to 12 Sherwood Street. The high profile scheme, known across the industry as ‘Q4’, was situated in one of the most logistically challenging parts of London – the congested heart of the West End.

The Environment

The intricacy of the project presented an array of complexities, not least through the sensitive neighbours which surrounded the structure itself. Situated a stone’s throw away from the Regent Street, Q4 is located on the corner of Sherwood and Brewer Street and within the Soho Conservation Area. Surrounding properties included the iconic Piccadilly Theatre, a trading coffee shop and a live operational gym to which occupied the basement and part of Q4’s first floor.

The Scope

The structure spanned 8 stories in height and was constructed in the 1930’s. Works consisted of strip out and asbestos removal works under fully controlled conditions. The removal was carried out in a top down sequence and involved the asbestos removal and decontamination works of thermal insulation, texture coating and AIB.

The method of removal was carried out via hand using specialist injection wetting techniques due to the confined working spaces presented throughout the life of the contract. Areas of extensive contamination included walls, pipework and ceiling voids.

As a result of the magnitude of removal required throughout the contract, Erith installed a bespoke decontamination unit within the vicinity of the building which was then resulted in significant costs savings – both in terms of resources and transportation.

The Workforce

Erith’s workforce consisted of the following personnel:

  • 35 operatives
  • 4 Supervisors
  • 1 Site Manager
  • 1 Site Based Contracts Manager
  • 1 Office Based Document Controller



  • Considerate Constructors Award

“Erith Contractors Limited has successfully completed these very sensitive and challenging asbestos removal & strip out works to the old back packers’ hostel. Working above a live gym / swimming pool and adjacent to the Piccadilly Theatre in Soho required continuous dialogue & interface with the neighbours to ensure minimum disruption.


The discovering of further asbestos based materials behind & within existing layers of plaster was dealt with pro-actively and sensibly by Tony and Ross Darsey which resulted in the swift agreement of the final account.”

Philip Saunders – Gardiner & Theobald Partner