Sorry Mark, but there aren't any.
The nearest site of any significance is the Calderstones in Liverpool:
http://www.themodernantiquarian.com/site/248
Unfortunately, they're locked up and you need to find someone willing to allow you in; I did.
The only other possibility is to try to find the ephemeral prehistoric footprints on Formby beach:
http://www.themodernantiquarian.com/site/8382
A National Trust warden told me where to look:
http://www.nationaltrust.org.uk/main/w-vh/w-visits/w-findaplace/w-formby/