I stick some in a drawer till they ripen, I also make a green tomato chutney with cooking apples, onions and sultanas, brown sugar with unspiced vinegar. There are lots of ways to make it but this is the one we like.

cheers Drc

If they aren't cherry types, wrap them in kitchen towel individually and then put them in the drawer in warm place. Alternatively put them in a bowl or container with ripe bananas as the ethylene (I think) speeds up the ripening process considerably.

what if there are some cheery toms?

Mine have not long started to ripen in this awful year so I,m hoping for a sunny autumn.......

I agree with Bertied - bananas or even banana skins do the trick, or leave a ripe tomato with the green ones - that works as well. Mine ripened like this just laid out on paper on a spare bed.