Guy’s and St Thomas’ NHS Foundation Trust aims to refurbish the exterior of the 34-storey tower to stop concrete deterioration, replace the failing windows, and improve the building’s carbon footprint.

Consultant Arup and architect Penoyre & Prasad have drawn up plans for the complex concrete repair and recladding job.

The towering hospital building is divided into two main sections, one housing the main wards and offices and the other services and stairwells.

The architect has proposed new aluminium cladding for the services tower section, while concrete balconies of the main tower will be cleaned and new glazing fitted.

This will improve the tower’s energy efficiency and give the 37-year-old concrete building a face lift so it sits more easily alongside the imposing Shard building now under construction at London Bridge.

The hospital trust hopes to gain planning permission shortly, with the work scheduled to be completed by autumn 2013.

Interested firms have until 20 June to prequalify ahead of tenders being invited on 21 July.

Prequalification and outline specification documents are available at https://www.delta-esourcing.com/delta or contact Huseyin Vehit by calling 0207 188 5319 for more details.