How well do you know UK's top female tech role models?
The technology sector and wider IT business economy is missing out on a great swathe of talent.
One recent skills audit of 250 digital and tech businesses found that the gender imbalance is widening, with men making up more than 70 per cent of staff and filling almost 90 per cent of technical roles.
BusinessCloud highlighted 100 female tech role models in December - and on International Women's Day we again showcase some of the inspiring figures who have blazed a trail in tech and are helping others to do the same.
Take our quiz below to see if you can identify these top ladies of UK tech.