Anyone remember this old brand of cereal (UK)

For quite a while now I’ve been trying to remember the name of a brand of cereal I used to eat as a child in the UK… this was in the early - mid 80’s

They were brown, sort of in a cresent shape.
Imagine one of those hula hoop type crisps cut in half, that would be a similar sort of thickness and shape. The cereal just had sort of rounded edges.
They were also crunchy.

Any ideas?

thanks…