Highlights as the UEFA Champions League gets underway with a host of Europe's biggest clubs in action in the competition's new league format. England are represented by Manchester City, Arsenal, Liverpool and newcomers Aston Villa, who are appearing in Europe's premier club cup competition for the first time since the 1982-83 season. Holders Real Madrid, now boasting superstar striker Kylian Mbappe alongside the likes of Jude Bellingham and Vinicius Jnr, are beginning their quest to lift the trophy for a record-extending 16th time.