Raspberries

I'm currently having the exact same problem. My raspberries look like there dying, but most peoples on the lotty look fantastic.

I've had the same problem with my best canes at home. Th others at home and at the allotment all look fine though so I don't really get it!

Since noticing the problem I have been watering it more carefully, and as you say little and often. I can see there is still some life in it but I'm not sure it will now produce as much fruit as it was going to do.  Some of th leaves look dead, would it be an idea to remove those so it can attempt to concentrate on the fruit?

It's very possible that your soil at the lotty and at home are quite different with one holding any moisture better than the other.

As long as there's any sign of life in a raspberry, it will recover with enough water. When cropping, they're very thirsty things in reality, not the drought tolerant plants people believe them to be. If they're suffering now, don't plan on getting much of a harvest this year since the plants need their energy to recover.