Cracking the Nazi Enigma code played a crucial role in ending the Second World War. The work of the British mathematician Alan Turing and his team at Bletchley Park is well known, even being turned into a Hollywood film.

But what is less well known is the groundwork laid out by mathematicians in Poland. Well on Saturday they have been honoured at the Polish Embassy in London, from where Kasia Madera reports.

This report features Sir Dermont Turing, Alan Turing's nephew and Jeremy Russell, Henryk Zygalski's nephew.