For a man who lives in the UK you dont see to know a lot about your countries boundaries as Sheamus is from Ireland which is not part the UK, here's information about the two countries
http://en.wikipedia.org/wiki/United_Kingdom
http://en.wikipedia.org/wiki/Republic_of_Ireland
To answer your question, there is no great prove that he was pushed because of Triple H, only Internet speculation, if those rumours are true i think he would have been pushed either way
Hey, he said the nearest thing to... not a champion from the UK... so you've just made yourself look a complete prick in your first 2 posts for nothing. Welcome to the forums... :/
As to the thread, no it is not solely because he is Trip's buddy, but it's certainly greased the wheels that he is.
Sheamus is a talented, experienced hand who spent a lot of time at the top of the UK and European scene. He was spotted by Regal and Finlay was familiar with him too from his pre-return time. He has a package that is unique in that he has size, unique charisma and ability and a built in "Irish Hero" vibe...the same thinking is why Sterling Golden was re-christened Hulk Hogan.
Sheamus is a clearly likeable and affable guy, he's not playing too far from his real personality and has paid his dues on both the developmental and foreign territories... he was new to WWE when he came in, but didn't need much training in the WWE style or repackaging... indeed all they did was drop the O'Shaunessy/S.O.S gimmick and that is arguably only cos of Kofi having it as his gimmick.
So he ticks the boxes, has done well with the pushes he has been given, has not caused any problems backstage and yes, has perhaps took the role that Trips himself once did with the Kliq by carrying some bags or taking Hunter's gym gear to be cleaned with his own... it's always been part of the business on both sides of the Atlantic and Japan and most importantly in other sports too, particularly Soccer where the younger players "clean boots" of the senior guys. Someone from the UK or Ireland who has done any sport, as Sheamus clearly did would be comfortable with the concept as it's normal practice. I doubt Sheamus has done Trip's laundry or carried a bag for him for a long time...just as Hunter stopped carrying Shawn's after MSG and his punishment.
He's also very good friends with guys like Regal, who is infinitely respected within WWE and one of Vince and Hunter's most trusted allies. If Regal vouches for someone it's almost the key to the business as he hasn't been wrong yet with the guys he has scouted like Cesaro, Sheamus, Bryan, Neville and the like.