In the article “Mind the gaping hole” (5 February, page 20), you say that “Chris Bolt, the QC who is acting as independent arbiter” threw out Tube Lines’ recent £327m claim against London Underground

In fact, that decision was made by Alex Charlton QC, who was the independent adjudicator in that claim. Chris Bolt is the PPP arbiter, and was not involved in that adjudication.

Ben Pennington, head of press desk, London Underground and London Rail, Transport for London

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