Plant ID for large shrub

dappledshade

It's in the garden next door to a cottage I stayed in. 
Glorious, small, milky white flowers in abundance on arching stems. 
It looks a lot like the flowers of a Banksian rose, but it's definitely a shrub rather than a climber.
Apparently it's slow to start opening, beginning late May and now looks like this.
The owner of the house hadn't planted it, but thought it was older than 10 years old. He didn't know what it was.

Any ideas?  

Loraine3

Could it be Deutzia

LG_

Difficult to be sure from the fuzzy photos, but it looks like a Philadelphus to me.

Paul B3

Pictures are indistinct , but I'd hazard a guess at some kind of Philadelphus . There are numerous hybrids and cultivars .

Helix

Did it smell fragrant?  Philadelphus often has a lovely orange’y type smell.

dappledshade

Nope, no scent I could detect even when I was downwind of it. Sorry about rubbish photos 😞

dappledshade

Now you mention it, the flowers do look a lot like my Manteau d'Hermione philadelphus. Are there Philadelphus with no scent?,

Paul B3

The only one I know of without a scent is the aptly named Philadelphus inodorus ; there may well be others .

Busy-Lizzie

My daughter has a huge one with no scent.

dappledshade

That's really interesting Paul and Busy L. It does make me wonder why though, when the main pleasure derived from owning one must be the heavenly scent!

LG_

I can't always smell mine from any distance - seems to be quite dependent on temperature as well as wind direction. 
As an aside, on Philadelphus scent: I once cut a sprig to take indoors as I enjoyed the smell so much. A few hours later I descended the stairs to a god awful stench of ? dog pee ? cat pee ? something rotten ? It was my Philadelphus! I've never brought it inside since, though still love it outside.