What to plant?

MMflower

Hi, my partner has gone and done some major pruning of the holly tree and there’s now a big gap there. It’s a very shaded corner area, also there are branches above spilling over from the neighbour’s garden. Also, this side of the garden doesn’t get much sun. What can I plant here in both areas circled? Please ignore the weeds , still work in progress ;-) Thanks!

Latimer

I'm a complete newbie, so take my advice with a pinch of salt but my research into shady areas had me looking at hostas and ferns. 

1634 Racine

Depends what you are trying to achieve I guess.  But if an evergreen, wildlife friendly shrub interests you then a small mahonia could fit in nicely.  Just watch out for the prickles!