White flowering shrub id

JAC51

hi, I grew this from a cutting from my OH’s garden but neither of us know what it is called.  Tried Googling it but still no joy. The flowers are on graceful arching stems.  I need to know so I can prune if required.  Any suggestions? Many thanks 

Buttercupdays

Have a look at  Spirea japonica 'White gold'

Silver surfer

Leaf shape looks more like Spiraea vanhouttei.
See leaf tip.
Maybe yellow leaf one  Spiraea vanhouttei Golden Fountain.

https://www.brokenarrownursery.com/spiraea-x-vanhouttei-gold-fountain-gold-fountain-vanhoutte-spirea.html
Compare to leaves on Spiraea japonica 'White gold' with pointed tips.
https://www.ashwoodnurseries.com/shop/spiraea-japonica-white-gold.html

JAC51

Thanks @Buttercupdays and @Silversurfer.  I think it might be Golden Fountain. I’ll plant out accordingly