MPs spent almost £640,000 on boosting security in the four months after the murder of Jo Cox, according to the latest figures.

The expenses watchdog revealed politicians' spending during the period was four times the cost of the whole previous year.

The Independent Parliamentary Standards Authority (Ipsa) said £637,791.63 had been allocated to MPs through its Security Assistance budget since June 16, while £160,023 was spent in 2015-16.