Replacement for Ceanothus?
 

A lovely Ceanothus started off this spring quite dead, hasn't revived, so
replacement needed.

It was in about a 1 metre cube of brick adjacent to a front drive, fairly
heavy soil (London), West aspect, lasted for just 4 years.

is there anything nearly so lovely that might last a bit longer?

Ideas, please.
Thanks,

Laurence