[WeavingGryphon]

Hello,
I've put in italics the actual questions as there's a lot of text here.
Basically are my blackcurrants and gooseberries past it and if not how do I get them going again.

When or how do you tell when your blackcurrant or gooseberry is past it. Are they past it or should I give them a chance? I'm up for giving them a chance since I have the rest of the plot to manner. But I would like to know how people think they'll do and how to help them be productive if possible. Basically do I NPK, soft fruit feed and manure like it's fun or just leave them until I can take them out?

Summary, as wordy post is wordy.
The blackcurrant plants were lost amongst the weeds. They haven't been touched for over 5 years, the stool is a foot and a half wide, they were the size of an old mini, it has been cut back in the past, the wood is black and withered (very old) and under the bark in places is pinkish brown. A lot of the branches were dead. I initially aimed to take out the dead ones, but the alive ones weren't very alive so it was hard to tell the difference. Or get to the area where the branch's tips and leaves were. I've cut them back since most of the branches were at ground height trying to escape the weeds that hid them. There's still around 10 branches that were old, 3/4 feet tall not very leafy but vertical. I got a handful of berries off it.
What do I do with them? Feed/dig out?

Gooseberry, half has died off, how do I get to even itself up?

LOOOONNNG long long long version.
We got a second plot this year and among the invading fireweed, raspberries, vicious nettles and brambles I found some blackcurrants. The plot has been abandoned for over 4 years-so all currant/gooseberry growth is too old. A little girl last produced art for the shed walls in 2014 so they've been neglected at least that long and done badly. To show how overgrown they are, we thought there was one plant, maybe 2. I've found 4/5, a 5 foot 9 (bit bigger than me) Rowan tree, a wicked vicious Tayberry that is taking over from somewhere up the back, a redcurrant and 2 gooseberries. Two of the blackcurrants were and the redcurrant still is the size of an old mini. I should have taken photos.

Both the Rowan tree and the two biggest blackcurrants had pancaked, the other 3 smaller aren't so old/ bad. By pancaked I mean the biggest branches were coming out the side, growing flat along the ground for about 5 feet and then turned up at the ends. If you lay your hand flat on it's back on the table and relax it looks like that. Attempt to find some light. We propped up the Rowan tree with a broken hoe so hopefully it'll start growing straight.

Sunday past, having read that once the fruit is over you should cut currants back I took into everything non currant around the biggest 2 bushes with the loppers that I could get to. Then I took into them. Then did a little on 2 other currants I discovered.

What I did to the 2 biggest black currants.
All the branches are too old so need to be taken out this year or next. Or the whole plant taken out. The stool on the big 2 were over a foot across, about the size of mop buckets. There was maybe 50g fruit between them if I'm generous, but they were good big berries.

All the branches were black, an inch -inch and a half wide (too wide) where it emerged from the stool, gnarled, branched a lot at the tips and had hardly any leaves. I couldn't tell what was alive and what was dead. Some of the branches were pinkish brown soft and squidgy under the bark at the stool end so I'm not sure if disease was setting in? Any ideas? There was only leaves at the tips (understandable, no point having leaves if there's no light) and maybe a max of 7 berries per branch.

I took out all of the horizontal branches and thinned the few that were vertical. There's still about 10 very wippy ones coming out of the stool. I'd just taken out 80% of the plant  so I left them to feed the plant, in the hope they'll help it recover  . 

Should I take out more of the little wippy ones when it's dormant? 
What do I do now? Feed or post a picture so you can condemn it and my pruning skills.

The other 3 blackcurrants need thinning out but their smaller, have a rubbish but noticeable (5x what the plants 4/5 times their size produced) and have more vertical growth. They still need most of the weeds choking them taken out, as well as the clippings pile removed from beside them. When I get up next should I take out the horizontal growth on them like I did the big ones? Or wait until their dormant?

The gooseberries have a shrub with ambitions to be a tree (or maybe a tree) growing over them. Which is why we didn't see them at first and I only found the second once I'd cleared the weeds from the first one. It's in a shrubby grassy cave of it's very lonesome. They both still produced loads of great gooseberries, but half of one plant had died off. So I cut away at the dead side in the hope to stimulate growth out that way. The side away from the shrub strangely  . I was going to clear around it but wait until it was dormant before pruning it. Am I right?

Finally the redcurrant. It's produced a load of berries, it's loads of vertical growth, it's the size of the cab of an old mini but I am going to wait until it's dormant before touching it. Also I can only reach one side for a Tayberry and the nettles. There's a youtube video on how to trim out a massive redcurrant. I was going to follow that. But that video is for a smaller plant. So how much should I take out of something that big? I will get a picture.

Thank you anyone for your help.