Looks like Tansy, if so it has a very distinctive smell if leaves are crushed

Would agree it does look like Tanacetum vulgare.

Thank you both :)

If it has no pungent aroma then look at Euryops pectinata which has similar leaves and flowers.

I don't know if it has an aroma, my cousin didn't say. I'll have to tell him about it. Thanks for your help.

I have been looking at this several times and the reason I don't think it's Tansey is it looks like a single flower so OB's suggestion of Euryops pectinata does fit the bill.

Thank you, yes it does look like a singe flower doesn't it ...