By GLEN OWEN POLITICAL EDITOR Published: 19:45 EDT, 21 March 2026 | Updated: 22:24 EDT, 21 March 2026 Ed Miliband has been accused of sabotaging Chancellor Rachel Reeves’s bid to boost AI investment by highlighting the huge power demands of the data centres required to drive the technology. In a letter to MPs who asked why the centres were not mentioned in his controversial plans to reduce carbon emissions to net zero by 2050, Mr Miliband said that ‘future demand from data centres, and interaction with wider energy system demands, remains inherently uncertain.’ The remarks are understood to have frustrated Ms Reeves…