HS2 derailed after engineering firm CH2M pulls out of £170m deal

An engineering firm has pulled out of a £170m deal to develop a section of the HS2 rail link amid concerns over alleged conflicts of interest.US-based CH2M had been chosen by HS2 last month to deliver phase 2b of the high-speed line, running from Crewe to Manchester and Birmingham to Leeds.CH2M has been involved with HS2 Ltd since 2012 and was awarded a £350m deal to develop Phase 1 of the line from London to Birmingham.