Spontaneous tomato plant growing...

Was going to finally 'weed' my veg patch but realised that the 'weeds' were tomato plants which had somehow been lying dormant in the compost from my dad's compost bins. I now have them in pots along with most of their mates that have sprung up all over my garden. I may soon be supplying sainsbury's as I have over 100 tomato plants....