Andy Farrell says Ireland will be ready for Felix Jones and England

'It's the South African defence and I know that Felix will constantly try and put his stamp on implementing that,' said Farrell

GURU: New England defence coach Felix Jones 

Andy Farrell feels a "top drawer" defence is fuelling Ireland's pursuit of successive Grand Slam titles as he turns his attention to nullifying England's new blitz approach.

The reigning Six Nations champions limited Wales to a penalty try during Saturday's 31-7 success in Dublin after nilling Italy 36-0 in round two on the back of beating France 38-17.