So as I wasn't having much effect by being nice, three years ago I decided to get nasty and dug out two of the four rows of Raspberries and then spent the following summer getting rid of the weeds by spraying with Roundup. I had to give two or three applications before the ground was free from any signs of Bindweed and I was able to replant with new Raspberry canes.
So as to not leave the house without any Raspberries I have had to leave the new canes to grow on for a couple of years before uprooting the next two rows for ground cleaning work, this is what I did last week.
Furthest away is the new row of summer fruiting variety plus one row of Autumn fruiting canes which have yet to have supports added. The two rows nearest have been removed and all this ground up to the two new rows will be kept sprayed off this next summer including the row of Artichokes that you can see in the bottom of the picture. I have saved canes and split one Artichoke plant to clean and save for replanting when the ground is clean, these will be grown on in a different location for the time being.