Built in 1974, the 34-storey concrete landmark is thought to be the tallest hospital building in the world, at 143m high.
The notice says that the team will 'review and advise all works associated with the refurbishment of the external structure and facia cladding and fenestration of Guy's Tower at the Guy's Hospital.'
The works, the notice continues, would 'provide an architecturally iconic, structurally sound, sustainable and energy-efficient building compliant with current standards fit for the next 25-30 years'.
The contract, applications for which must be in by 19 October, is scheduled to start in December this year. Completion is pencilled in for November 2010.
For more information see ted.europa.eu