In terms of the Clerks’ role, Members of both Houses value their expertise in terms of procedural knowledge, but they may not have the requisite skills to oversee the delivery function (the Delivery Authority) in a complex programme with multiple interdependences. There is no evidence that the Clerk of the House and the Clerk of the Parliaments have either the expertise or the capacity to successfully oversee such a large and complicated infrastructure project. The Clerk of the House described it as, in cost terms, sitting “somewhere between the London Olympics and Crossrail”. When asked, the Clerks could not set out how they would manage these responsibilities alongside their full-time roles.42