Since the murder of MP Jo Cox last June as she was campaigning in her Batley and Spen constituency, the total expenses claimed by MPs for security assistance have increased on a massive scale.
You will find more statistics at Statista
As Statista's Martin Armstrong details, from 2010/11 to 2015/16, the mean annual total was £73 thousand. In 2016/17 this rose to an astounding £2.55 million.
In response, the IPSA has made it easier to get expenses, such as reinforced windows and bomb-proof letter boxes, signed off.