A prepared statement issued by Eurostar and the project team said claims brought against the team had been "comprised by way of a commercial settlement without admission of liability".
The statement added that all parties had signed a confidentiality agreement not to disclose the terms of the settlement.
The team consisted of construction manager Bovis Construction (now Bovis Lend Lease), architect Nicholas Grimshaw & Partners, cladding contractor Briggs Amasco Curtainwalling and the cladding subcontractor's parents Tarmac (BA) and Tarmac Holdings.
Eurostar originally claimed costs associated with investigating and rectifying defects at the station in a writ served at the Technology and Construction Court in December 1999.
Legal action was begun after defects appeared in glass panels at the station as a result of "nickel sulphide stone expansion growth", which led to cracks in the glass.
A Eurostar spokesperson expressed relief at the settlement, saying: "We are pleased that there is some progress on this matter."