Yeh it is available to search but once you have a certain match it is 30 credits to look at the original document, and so it is better to really have a good idea of who you expect to find and that means double checking in the search for likely family members found from other sources. It;s not included in your subscription to find my past i donlt believe.
I have done just that dot, I have downloaded the original documents for the important bits of the tree, the rest can wait until it can be incorporated into my explorer package on findmypast.com
I am using this site to do the basic searches now cheshire and lancashire have been added, the info i get on the free search is sufficient to confirm my research so far. http://www.1911census.co.uk/
Are all of Lancashire and Hertfordshire online though? I have not found any ancestors yet, even though I know for certain that the families certainly lived in those counties and the names not common ones. None of the Cheshunt area seems to be there neither large swathes of Liverpool.