James Greive Apple not too good and a Pea question Help please.

The apple look's like it needs a serious haircut . Pea's I don't know 

I would wait till autumn ! but there are wiser heads than mine on here 

Peas - agree with Salmo that the leaves are normal

Apple tree - personally I would probably tackle the problem before autumn.  Perhaps later in June and when we have warm calm dry weather (reduces risk of fungal infection spreading and getting into the cut surface) then cut the branch with the canker right back to good wood and use a tree wound sealant (google and you'll see several on the market - some contain fungicide so do check that it is suitable for fruit trees)  You could also remove branches that cross over as these are likely to rub against each other and be a problem in the future.  You could wait until autumn to do a proper pruning job on the rest of the tree.  Try to remove as much of the debris / sawdust when done and preferably burn. 

What concerns me is the die-back on branches that were healthy - they show applets but the leaves have shriveled up.  There was plenty of blossom, the tree looked healthy 4 weeks ago - Weather related?

possibly - looking at the photo it does appear to be on one side where the branches caught the brunt of something (maybe a frost or wind burn on tender new leaves or even carelessly sprayed herbicide?)  If the branches still look green and healthy, perhaps leave them but might be worth keeping an eye on growth, check for pests like aphids or signs of "blight" (just a generic term in this case of leaves appearing to scorch and die off without obvious reason other than it may be fungal)