The tea stain was on a large cotton tablecloth and silly me did not soak it immediately when it had been stained. It remained in the linen basket until it was washed in the normal way in the washing machine. Oh no - the tea stain did not come out. Give it another wash! Same result - still stained. Research was duly done on the web and I went for a solution of white vinegar and water to soak away the stain. After the soak it recommended a quick rinse with boiling water. Zilch. The stain remained. It was a stubborn stain. The next course of action was a soaking in bleach and water followed by another wash.
Result! Stain gone - tablecloth lives to see another day.
I've just got to iron it now.