1. Ofwat, 2003a. 27/03/03: Setting water and sewerage price limits for 2005–2010: framework and approach.
2. Ofwat, 2003b. 05/06/03: Capital unit costs in the water industry. Feedback on our analysis of the March 2003 water company cost base submissions.
3. Ofwat, 2003c. 18/12/03: London Economics with Professor M.F. Shulter (LSE) and Black & Veatch Consulting: PR04 Scope for Efficiency Studies report, November 2003 (report commissioned by Ofwat).
4. Ofwat, 2004a. 02/12/04: Future water and sewerage charges 2005–2010: final Determinations. Chapter 10.
5. Ofwat, 2004b. 07/12.04: Information Note 28: reporters auditors and valuers.