http://members.lycos.co.uk/churchstjohn/

St John the Evangelist , Cinderford is where I think you should be looking...

< updated - I thought the Website included a map ! sure it used to

anyway the church is on the right hand side coming down St Whites Rd from Littledean hill towards Yew Tree Brake / Speech House. If you reach Cinderford Bridge and start going up hill toward Lightmoor you have missed it ! >