Hi TG, It's a Choisya × dewitteana 'Aztec Pearl'

Agree with Ilex.Common name is Mexican orange blossom, because the flowers are supposed to smell like orange blossom - personally, I can't say they do.

Thanks very much Ilex and Bamboo for your help, while i was looking it up i noticed the leaves were different to the ones i've seen, It has a very lovely strong smell its doing better since i replanted it , 8~)

TG - the more commonly seen Choisya is C. ternata which has much larger/wider leaves.

'Aztec Pearl' is a hybrid between C. ternata and C. duosa var. arizonica and is altogether more delicate in appearance.

I think garden centres tend to label any Choisya "Mexican Orange Blossom" as a sales device, and that's part of the problem with common names in general.... I would agree with Bamboo that I've never known any to smell remotely like actual Orange blossom - a very nice plant, even so!