Spotty sweet peppers

I've had a good crop of sweet peppers this year but quite a few have had spots on that go right through the flesh. Some it is just a few spots but on others there is quite a lot making them almost unusable (except in curries may be ). I've had a good look round but can't find any pictures of similar anywhere. I have had it in previous years. Anyone any ideas?

My thoughts are a fungus of some sort, may be tomato leaf mould which has just appeared on some of my tomato plants.