Major British insurers plan to invest £25 billion into infrastructure projects over the next five years, the government said.
Boosting private-sector infrastructure investment is a priority for the government.
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The Ukip leader confirmed he had "no prior warning" of Douglas Carswell's resignation from the party as he hit out at the "staunch Tory".
Two knives were found at the scene in Islington, North London, and the suspects fled on foot before being arrested.
The violence began after a counter-protester allegedly doused a female rally organiser with pepper spray.