20 We consider that the Agency was overly reliant on its advisers. The Agency spent £80 million (7.5 per cent of the capital value) on advice and support from external organisations, including £45 million on technical advice of which £24 million related to design works. The Agency has not reviewed the total costs of its procurement to identify lessons for future projects. The Agency continues to rely on advisers for contract management support and documentation about the procurement. The Agency's reliance on advisers has built up over time and in part reflects insufficient commercial and technical skills within the Agency. The Agency risks advisers controlling projects and having little incentive to transfer knowledge back to the Agency. The Agency is now addressing these issues.