The second WBS Nudgeathon was won by team Nudge Nudge Wink Wink who collected a cheque for £500.

Using theories from behavioural science, nudges have been used to solve a range of issues from persuading more people to pay their taxes on time to helping households have their lofts insulated.

Based on the idea of Hackathons, which brings programmers together to solve a computing issue, the Nudgeathon asked eight teams to tackle the problem of women looking to get pregnant not taking folic acid.

It is recommended that women of child bearing age take folic acid prior to falling pregnant and continue to do so 12 weeks into their pregnancies.

This reduces the risk of a baby being born with a neural tube defect (NTD), a condition that affects about one in 1,000 babies and can cause death or brain defects. Despite the recommendations, many women do not take folic acid.

The judges felt Nudge Nudge Wink Wink  - who are Archy De Berker, Joe Minas, Keith O'Brien, Michael Scoins and Nadia Chan - had the best idea, using behavioural science insights to re-design the existing NHS website.

Relive the two-day event below.