ADS costing £6million have been placed by Government bosses on “immoral” tech sites including Facebook.

Whitehall departments lavished the cash on the social media firm, which has been under investigation for UK tax payments, as well as Instagram and Twitter.

The biggest spender was the Department for Education, blowing £2.2million between April 2017 and September 2018.

The outlay was revealed in a written Parliamentary answer to Labour MP Tulip Siddiq. Tory Anne Milton said the cash went on “awareness and behaviour change”, campaigns to recruit teachers, apprenticeships and tackle child abuse.

The Department for Work and Pensions spent £1.7million between June 2017 and last September while the Home Office paid £850,000.

International Trade, Transport, Health, Exiting the EU and Environment spent between £29,000 and £333,000.

Facebook, which owns Instagram, was branded immoral after paying £7.4million in tax despite sales of £1.2billion. Its £15.8million bill was slashed after it claimed £8.4million credit for giving shares to staff.

Tory MP Nick Boles said: “What Facebook are doing may be legal. But that doesn’t mean it’s moral.”