I'm sticking my usual Rocket early potatoes into the plot. I like Rocket, they're cheap, easy to grow and very reliable. Plant them them now and I'll be eating them the first week of June, regular as clockwork.
These days my back doesn't want to go through the whole trench digging routine, anyway, it's not required. My method involves far less earth moving. I use a string line to help me get a straight(ish) row (or a plank can act as guide if you are using one to stand on), I then set the spuds out about a foot apart on the line (12" earlies, 18" for main crop).
Remove the string guide line. I move the first spud in the row out of the way, usually towards me but keeping it in line with its original position and dig a hole adding a little fertilizer into the hole and around the spud next in line on the surface. Pop the moved spud into the hole and move the next one out of the way. Dig the hole for the next one, using the earth you dig, along with the fertilizer you just sprinkled on it, to fill the previous hole. That way you shovel a lot less earth and you ensure a little fertilizer is all through the earth above the spud, not just around it. Continue down the row until all the spuds are planted. You can wait until the shoots start to show or earth up after planting.
That's it from me. Bye.