Two unidentified plants

I'm doing more pictures, for the website, and so far there's two plants that I can't identify.

Here's the pics:

1) A yellow shrub, with largish trefoil leaf, and yellow big flowerspikes. It's something between a laburnum (but it's not hanging) and a butterfly bush (but it's yellow, and has those trefoil leaves...)
Yellow flower and leaf.Pic: Yellow flower and leaf.

Branch with yellow flowers and upstanding flowerbuds.Pic: Branch with yellow flowers and upstanding flowerbuds.

2) A magnolia-like large flower, and an equally large flowerbud. If they were leafless I'd label them Magnolia sp. and be done with it; as is, they have way too much leaf for magnolias in flower, so what are they?

Large pink flowerbud.Pic: Large pink flowerbud.

Large white-and-pink flower.Pic: Large white-and-pink flower.

I'm not quite sure that these two are of the same species. I expect they're in the same genus, though. They were growing rather close to each other, in Kew Gardens, in London, in early June.
Many thanks.

Many thanks for that, Jan!

Many thanks for that, Jan! I've ditched older scans so I'll need to rescan the magnolias.