Dorothy Du Boisson, MBE (26 November 1919 – 1 February 2013) was a code breaker stationed at Bletchley Park during World War II.

Du Boisson joined the Women's Royal Naval Service (known as WRNS) during WWII and was stationed at the Newmanry sector of Bletchley Park, England.

After many experiments, Du Boisson found a unique way to strengthen it by using a special glue, a warm clamp, and French chalk.

The working shifts could last up to 70 hours per week[3] because many machines kept running all the time and there were few people who knew how to operate them.

Due to restrictions on outside policies, workers had to spend most of the time locked in rooms without proper ventilation and luminosity.

"[citation needed] The poor conditions of the buildings and the machinery with lots of electrical cables also were not a good combination, since it was common to have fires.

They were expected to simply follow orders given by their superiors and were prohibited from asking questions or making comments about their work.

Once, we were told, a senior German officer has sent a coded message asking for the luggage of his mistress to be forwarded.

"[2] The engineer who designed and constructed the prototype Colossus, Thomas Flowers, said "Bletchley Park changed the course of history and the praise that the cryptanalysts have received is well merited, but nothing has ever been said about the many people who worked like slaves for over a year to create Colossus and get it into service by D-day".