Thanks to both Woody and Azeroth, there was a small book entitled 'The Battle of Nantwich' but out of print and stock at the moment, I'm annoyed that I didn't order it when it was last on caliver books website ! I have PMed my details to 'azeroth' and will try and post a summary of my findings about this battle to date when time permits (or should i say half time permits )
PS just been searching Caliver Books website again, and found the book in question now listed as 'Happy Victory, The battle of Nantwich 1644' and Daves website is updated and much easier to use !