Peachysteve’s ID is spot-on.
Your example, and habitat description given is very typical of Leratiomyces ceres – Redlead Roundhead.
I actually spotted several of these less than a week ago growing amongst fallen decaying small twiggy debris, at Ainsdale Pine Woods (near Southport, Lancashire). – The archetypal “sandy pine forest” habitat for this species.
Regards,
Mike.
That’s great, thank you! It’s the first one I’ve seen, it’s great to know the ID so I can research it more.
Best Wishes,
Rebecca