From Inside Soap magazine issue 20-26th Jan 20007 says-

That former Neighbours and Home and Away star Richard Grieve has swapped the Aussie sunshine for the Yorkshire Dales to play the sexy newcomer Jonny Foster.
The 36 year old actor will make his Emmerdale debut next month as Jonny's pressence puts more pressure on a already crumbling marriage .

''Jonny is a farrier- he puts shoses on horses & is employed to work at Butlers farm but there's tension when Perdy suspects that Greyson has taken a fancy to Jonny -who just happens to be gay'' explains a show spokesperson.