The National Society for the Prevention of Cruelty to Children (NSPCC) has announced 1st February 2019 as ‘Number Day 2019’, saying:

It’s maths, but not as you know it.
Join thousands of schools for a mega maths-inspired fundraising day and raise money for the NSPCC.
Whether you dedicate a day or an hour to being a maths maverick, every pound you raise counts towards our fight for every childhood.

Schools that register get digital resources to use in class, fundraising tips, maths activities, posters and safeguarding teacher resources.

Number Day 2019 at NSPCC.