Probably C. hederifolium at this time of year and there, a garden escapee.

That particular one is one of the Lace Cap Hydrangeas. If you want to grow them they are widely available in many varieties. But be warned. In many parts of the UK the flowers will not be blue like that but a muddy pink. You need acid soil to get that colour.

I would love to grow that Maple but alas, no room. :o( The ground cover amongst your Violets is Wandering Jew...a weed. Can cause skin allergies on dogs. It is hard to get rid of because anything left will grow back. Vigilance is needed. The garage wall has Ficus pumila, creeping fig. It is pretty and useful but if not kept under strict control, can turn into a monster....you might want to Google information about it before the trouble begins. The small plant with the shiny leaves is Coprosma. Considered a weed in Melbourne. An untidy bush that is hard to keep to a decent shape and reseeds everywhere. I would pull it out now while it's small. Sorry to be so negative, just being honest. Dee.

Before the flowers push out. https://www.google.com/search?q=Gladiolus&source=lnms&tbm=isch&sa=X&ei=3PNuVafbEpS5oQTf1oEw&ved=0CAcQ_AUoAQ&biw=1429&bih=992&dpr=0.9#tbm=isch&q=Gladiolus+flower+bud