The gap between men's and women's earning is 14.2%, figures released to coincide with Equal Pay Day show.
That revelation has been slammed as "shocking" by the TUC's Frances O'Grady, and criticised by equal pay protesters for showing up a slowing in the Government's commitment to end gender pay discrepancies "in a generation".
But how does that number translate to working women across industries?
We've put together the definitive guide to the real state of Britain's employees, by sector, and some suggestions for what women could buy with the money they're losing out on.
Male average: £26,652. Female average: £21,304.
Pay gap: £5,348 - 20%
A woman could buy...
A bottle of Perrier-Jouet Champagne.
Male average: £39,256. Female average: £30,729.
Pay gap: £8,527 - 22%
A woman could buy...
A nearly new Peugot 208 hatchback.
Male average: £85,517. Female average: £54,147.
Pay gap: £31,370 - 37%
A woman could buy...
Three years university tuition. For now...
Male average: £33,341. Female average: £31,211.
Pay gap: £2,130 - 6%
A woman could buy...
Two Mulbery handbags.
Male average: £42,338. Female average: £34,676.
Pay gap: £7,662 - 18%
A woman could buy...
Every single sale item from the John Lewis Christmas advert. With a bit of spare cash for some extra telescopes.
Male average: £38,814. Female average: £35,966.
Pay gap: £2,848 - 7%
A woman could buy...
A coveted annual zones 1-6 travelcard in London.
Male average: £64,558. Female average: £38,632
Pay gap: £25,926 - 40%
A woman could buy...
An entire wedding. From start to finish. (The average is £22,000) With three grand left over for a top-notch honeymoon.
Male average: £93,426. Female average: £61,714.
Pay gap: £31,712 - 34%
A woman could buy...
273 return flights to Paris
Male average: £35,517. Female average: £22,201
Pay gap: £13,316 - 37%
A woman could buy...
At the end of 25 years work, a Scottish island. We kid you not.
Male average: £41,651. Female average: £32,844
Pay gap: £8,807 - 21%
A woman could...
Have enough to get a mortgage for £200,000 home.
Source: ONS Annual Survey of Hours and Earnings, 2014