The government wants all year groups to be back in class in the new school year.
The video was arranged to mark Sunday’s anniversary of the election of the first Jewish MP Lionel de Rothschild in 1847.
As Mr Williamson recalled, he was unable to take his seat because MPs had to profess allegiance to Christianity and it took another 11 years before he could actually enter Parliament.
He “changed British history by tackling discrimination and promoting diversity,” the minister said.