It's the fifth most visited website in the world, and the first port of call for those of us in search of information about a famous person or historical event. But did you know that only 17 per cent of Wikipedia's biographies are about women? It’s a woefully inaccurate reflection of women’s achievements - and it has to change.

That's why, during this year’s London Tech Week, which starts today, I have set up an ‘Edit-a-thon’ at Bloomberg’s office in the capital to try and help redress the balance.

Schoolgirls from across the city will be joining forces with Wikipedia’s experts and women in the tech industry to create a surge in new pages about women, and to add more detail to existing ones.

With 83 per cent of biographies on Wikipedia about men, you may not be surprised to learn that men also make up around 85 per cent of those who edit pages on the site. That is also something we want to see change - after all, anyone can be a Wikipedia editor if they want to, and this could go a huge way in leveling the playing field.

So why are there fewer female Wikipedia editors? Previously, this 'Wikigap' was blamed on a lack of knowledge about the editing process; for some, it may be a case of just not having enough time. Others might suffer from a lack of confidence about submitting biographical entries, with some women reporting that they have had negative experiences of doing so, and faced abuse or conflict online. These are all issues we must address if we are to see a shift in the number of pages about fascinating women, past and present, that the site so sorely lacks.