Red Flowering Currant -Dying -Why?

I have had this for 5/6 years -two weeks ago I noticed branches wilting -this has now turned to this-dead yellowish crispy leaves

 This is the other side-and obviously how it should look-but it is spreading

All plants around it around are fine but the one I had before went the same way- but after 3 years of growth

It flowered normally earlier in the year-no sprays,no weedkillers have been used

Anybody any ideas what has happened?-I am flummoxed.

That is exactly what happened to mine at about the same age.  I don't know what happened but I couldn't stop it.  I cut off all the branches which were dying back but it didn't save the rest of the plant.