Yeah the pods do look like the rat tail one, very similar anywayNot the little round red ones, but my missus was from Japan and they have a very different radish, Have a look at rat tail radish, big plant, large white root, and pea like seeds similar to those.
You're most welcomeYES, YES, YES! Thank you both. That is exactly what happened. I have a boatload of rat-tail radish seed pods to share now. I never would've guessed that.