Dreaded blight

[pmc]

I think all of the plants have got blight. The toms weren`t doing much this year -spindly & not many trusses & now all the bottom leaves have gone yellow with brown blotches. The toms themselves are ok tho , no marks on them. The peppers have started to drop their leaves too & the melon plant & cues don`t look that healthy. Should I just leave everything & see if the toms ripen (got some big ones that are turning) & then rip everything out early & give the GH a good clean?
Also I`ve got a strawberry tub in the corner. Do they get blight? Some of the leaves have red edges.

Not having a good year as the deer ate the bottom half of my bean wigwams, nibbled all the mangetouts & stripped the beetroot & spinach plants!

[Flummery]

Doesn't sound like blight to me. At this stage of the season tomato leaves often get a bit manky looking. You can just take them off. If your fruits are doing fine I'd not worry.
The other things you mention don't suffer from blight as far as I'm aware. I think they are just getting on a bit - comes to us all! You could try a bit of a seaweed extract or comfrey type feed - are they getting enough water - especially the cucumber? It's hard to overwater these.

[sewer rat]

As Flum says, it certainly doesn't sound like blight. There are a host of reasons why leaves go yellow and drop off - overwatering, underwatering, age (comes to us all)trace element deficiencies, various diseases and viruses, red spider mite etc etc etc.
I would go with Flum's suggestion of a bit of plant feed (either seaweed or comfrey based solutions are excellent choices as they both contain a host of essential trace elements ) to begin with and take it from there.
Your red tinged strawbs are nothing to worry about either.