Historic weekend shows Premiership’s clout but ominous signs for Pro12

• England have unprecedented five Champions Cup quarter-finalists• No Scottish, Welsh or Irish teams qualify for first time everAll sorts of history was made on the final weekend of European rugby pool matches, some of it barely credible from an English perspective. Never before have five English sides made the last eight of Europe’s premier club competition and never have the quarter-finals been an entirely Anglo-French affair. At least one English side is already guaranteed to make the final in Lyon on 14 May.Even by the standards of European rugby photo finishes this was as remarkable a fin…