<p><br /> Martin Johnson has urged England to be ruthless in their Six Nations opener and take full advantage of Wales' desperation for a victory.<br /> </p><p><br /> Wales head into the championship without a win in seven Tests and Johnson has been quick to emphasise the pressure that will be on the home team.<br /> </p><p><br /> Johnson dismissed Warren Gatland's criticism of England hooker Dylan Hartley as the actions of a man under the cosh - and he wants England to turn that heat up.<br /> </p><p><br /> He said: "If you haven't won for a long time, you get that feeling of 'when is the next one going to come from?' We can control that in the game.<br /> </p><p><br /> "We must give them no easy outs, no easy scores. If we get into the last quarter with them behind, that is where we want to be.<br /> </p><p><br /> "That is the mental side of the game that is very important."<br /> </p>
