He has also represented Wales at Under 16, 18, 19 and under 21 levels, captaining Wales U19s during the IRB World Championships in South Africa in 2005.
He enjoyed two spells with the Exiles and made 11 appearances in the Aviva Premiership last season, including starting both games against Gloucester.
With Koree Britton, Darren Dawidiuk and Huia Edmonds already under contract for next season, Davies now considers hooker to be a position of strength within the squad.
"Dan's someone I've come across in the past when he was in the Scarlets Academy. He's a fairly young hooker who did well last year when he was at London Welsh.
"Hooker is a key position for us and we have to make sure that we have enough plenty of cover of the right quality.
"Huia (Edmonds) is still a bit away from being fit to play, so we have to make sure we have adequate strength in depth moving forward."
And, as George gets to know his new team mates with Gloucester reporting back for preseason training this week, Davies is confident that the new man can make an impact.
"Anybody that we bring in, we believe that they're ready to do that. And, in the right environment, we hope to see them grow and reach their full potential."
"That's our job as coaches and strength and conditioners, to help them be their best from a physical, mental and tactical point of view."
"If we can do that, then Dan will develop within this system and he will really push these guys."