I suspect that from a BMD records perspective, you have it the classic non conformist / civil registration pre 1875 "challenge" :-(

I'm not aware of an electronic listing of Littledean Independent MI's....
The GFHS non conformists CD's http://www.gfhs.org.uk/products.htm probably do not cover this either

<><><> this may be George's Free Miner registration

Surname Forename Age Residence Reg Date ID
Tingle George 48 Littledean Hill Sept 8th 1838 153