A nine-year-old boy scout who appeared before the UK Parliament accused the managers of a controversial high-speed rail project of being "really really bad" at maths and making things up.
Alex Rukin, from Kenilworth in Warwickshire, in central England, criticised the managers of HS2 - a planned railway between London and the north of England - for not being able to use a map properly and offered to help them work out the sums.
His mature appearance before a Commons committee scrutinising the legislation drew plaudits from MPs and triggered a detailed response from the Department for Transport's lawyers.
Alex, who appeared in a jumper covered in boy scout's badges, is believed to be one of the youngest people ever to address Parliament.
Seated alongside his father Joe - the manager of the Stop HS2 Campaign - the young campaigner spelled out detailed concerns about how the proposed rail line would impact homes and woodland having submitted a petition to the committee.
"Because the HS2 people are really, really bad at maths and make things up that aren't true I'm worried that HS2 will cost more than they say," Alex told MPs.