Gardiners Close is the home ground: http://www.pitchero.com/clubs/basildonunited/location/
Looks to be nearby a big shopping mall on Festival Way (from google maps).
Shouldn't you ask you uncle Peter for directions (not mine as he lives in Wgtn)? On the club page there are a few match reports written by a Glen Eckett - maybe you could use the contact form on the website to ask him.
How about a UK fever zone?
Have you got a stripey or Nix scarf to put in the photo?