new house 4

Following on from yesterday's message, where I posted photos of five plants in the garden of my new house, I'm now posting photos of the final two plants which I'd very much like to identify. A few details which may help:
15+15b are two photos of the same plant - it is a bushy shrub, over 1 metre high with small leaves(about 3cm long) with jagged edges and clusters of small flowers - dead heads visible
16a+b - again, two photos of the same plant. Over 1m high. Seed pods formed from dead flowers visible
Again, thanks in advance for any help.

 

Looks like 15a/b. are a Spiarea

16a/b look like a Hebe

Dave

 

Thanks very much Dave - do you (or anyone else) have any idea which species of Spirea it is?

 

1 and 4 are the Spiraea, 2 and 3 are the Hebe. What colour flowers does the Spiraea have?