You asked

The Treasury allocated the Office for National Statistics £4 million to make necessary preparations for EU-exit in 2018-19 and 2019-20.

I would like to know how much of this allocation the Office for National Statistics has spent thus far.

We said

Thank you for your request.

As part of the annual HM Treasury Supplementary Estimate process £2m was delegated to UK Statistics Authority specifically for Brexit related activity for Financial Year 2018 to 2019. Of this total an estimated £1.4m has been spent from April 2018 to January 2019. This figure is un-audited and thus should be treated as an estimation only.