Wales’ Rob Howley rules out ‘champagne rugby’ against England

• Wales attack coach defends Six Nations style of play• ‘Our aim is to ensure next performance is better than the last’Rob Howley has mounted a vigorous defence of Wales’s style of play after the victory against France in Cardiff last month was greeted with a crescendo of criticism inside the country, even though it meant they had their best winning record against Les Bleus for 60 years.Howley, the Wales attack coach, pointed out in advance of the visit to Twickenham on Saturday that Wales had a 73% success record in the Six Nations since the present management team took over at the end of 200…