Good morning garstonite,
thank you for your input.
I am aware of the LDS/Family Search entry.
Before asking on RootsChat I had already searched through the Batley BMD entries from 1550 to 1900 for Bastett/Bastott and variants on LDS/FamilySearch, Ancestry, FindMyPast and other sites, without success, and conducted an unsuccessful blanket search of Yorkshire for the name.
Regards,
Janet