Budget 2012: More airport capacity in south, more trains in north The policy paper could see a complete about-turn on the Coalition's initial view that it would not allow new runways at Heathrow, Gatwick or Stansted, and may also lead to progress being made on Boris Johnson's hopes of a new airport being built on the coast. However it will not be published until after May's London mayoral election. Joss Garman, a Greenpeace campaigner, said: "By backing airport expansion in the south-east George Osborne will overturn the coalition agreement and give the thumbs up to a jump in carbon emissions and two fingers to the huge numbers condemned to the blight of more noise and local air pollution." Mr Osborne went on: "We want to look at the opportunities for increasing the role of private investment in the road network, learning lessons from the water industry." Detailed Treasury documents show that a feasibility study will be carried out into "new ownership and financing models for the national road network," with an update planned for the Autumn Statement. The Government has now confirmed its "support" for a controversial link road between Bexhill and Hastings, "to facilitate economic regeneration in a deprived area of the South East," while improvements to the A14 between Huntingdon and Cambridge could be "part-funded through tolling." On railways, the Budget disclosed that £130m will be invested in Network Rail's Northern Hub scheme to improve the links between Manchester and Sheffield, Rochdale, Halifax, Bradford, Bolton Preston and Blackpool. This will involve increasing capacity in order to schedule more fast trains, and electrification of some lines. Not under this Coalition Government," the Chancellor said. Budget papers also said the Government would look at "whether direct intervention is required to improve mobile coverage for rail passengers." Sir David Higgins, chief executive of Network Rail, said the announcement was "a welcome show of confidence in rail bringing benefits to passengers as well as driving economic growth." Last year it was announced that a £100m scheme would deliver high-speed internet connections in 10 "super-connected cities." Aside from the capitals of London, Edinburgh, Cardiff and Belfast, these were named as Birmingham, Bradford, Bristol, Leeds, Manchester and Newcastle. It was announced that a further £50m would be found to improve web access for businesses and residents in 10 smaller cities. Mr Osborne said: "The fastest digital speeds in the world available in our cities, with the most connected countryside in Europe - and the most creative digital content anywhere. He also told the Commons that the Government was working with "dozens" of pension funds so they can invest £2billion in infrastructure schemes by 2013. John Walbaum, investment consultant at Hymans Robertson, warned: "Large greenfield infrastructure projects inevitably come with a significant degree of risk attached in terms of constructing and implementing on budget and on time. Not all pension schemes are going to feel confident about taking on this risk and the nature of any Government guarantee or underwriting to mitigate it will be important. Nick Prior, head of Infrastructure and Capital Programmes at Deloitte, the business advisory firm, said: "The concern is that we are still debating the Government's aspirations and are no closer to getting the shovel in the ground."