Jack is 19 and can play as a full back or in midfield. He was once on the books of Swindon Town before joining Salisbury and featuring for their development and first team.
We were able to catch a few words from Jack earlier today.
"I'm looking forward to getting started and hopefully getting more minutes under my belt. Thatcham seems like a great club with a good manager and coaching staff that's on the up and I'll be doing all I can to help the team continue to progress."
Everyone here at Waterside Park would like to welcome Jack to the club and wish him all the best.