Who wrote the science fiction novel 'The Day of the Triffids'?

I remember this from my childhood and being really scared 😨🙈🌾🪴

Elfcounsel, really I read the book years ago I thought it had a good ending I must read it again as I can't remember it.

Read it ages ago. Need to re-read to remember the details.

Terrific book. Good film too but they gave it a happy ending which the book didn't have.