How do I remove Spanish bluebells?

But can anyone tell me how I can rid of the strong straight-up Spanish bluebells that have taken over in my garden?

I never planted one of them and they grow up through my established plants and smother the young shoots.

It is impossible to try to dig up the corms as they seem to come from feet down.

While they do give a haze of blue, it is not the same colour as the gentle English bluebell.

Any suggestions will be most gratefully received.

Bridget Long

Rose Green