Sick looking Tom Leaves

Looks more like the lower leaves that have run their course. I take it the upper ones look OK?

Phew.
Thanks for the replies, the top leaves and the rest of the plant is fine, i was a bit worried because it was only one plant out of four that was affected. its only my second year growing, every days a school day

and upthetump, i had heard about it being put in cut flower water to prolong the flowers so i googled it and found this. http://www.dailymail.co.uk/news/article-2625661/Problems-growing-tomatoes-Feed-ASPIRIN-say-scientists-fight-disease-boost-yield.html