Bush with yellow flowers - does anyone know the name?

I was wondering if anyone knows what this is called?
Many thanks

 

It looks like Corydalis lutea

 

That’s Corydalis lutea commonly called Yellow fumitory
Corydalis lutea | yellow corydalis Herbaceous Perennial/RHS Gardening
A pretty thing … it seeds itself about a bit, but is easily removed if it’s in the ‘wrong’ place … and slugs seem to leave it alone … what’s not to love?

 

Ah lovely thank you so much. My friend was thinking maybe it's a weed but I think it's so pretty and looks like a proper plant to me.

 

It's a shame that the blue-flowered species of Corydalis don't seed around so easily !

 

Or indeed any of the Corydalis species like C,. solida. If anyone does have Corydalis that sets seed, it is best sown fresh and possibly slightly under ripe.