Who were the British winners and losers in Europe this week?

Eight British clubs were in action as the Champions League and Europa League group stages began.

European football began in earnest this week with the first games in the group stages of the Champions League and Europa League being played.

Eight British teams were involved across the two competitions, with mixed results.

Here, Press Association Sport looks at the winners and losers from the first round of matches.

Tottenham – LOSERS

Harry Kane endured a difficult night as Tottenham were beaten in Italy (AP)

Liverpool – WINNERS

Roberto Firmino came off the bench to good effect (Peter Byrne/PA)

Manchester United – WINNERS

Paul Pogba scored twice as Manchester United beat Young Boys in Switzerland (AP)

Manchester City – LOSERS

Pep Guardiola could only watch as his Manchester City side were beaten by Lyon (Martin Rickett/PA)

Rangers – WINNERS

Steven Gerrard's impressive start to management continued at Villarreal — Steven Gerrard’s impressive start to management continued at Villarreal (Alberto Saiz/AP)

Chelsea – WINNERS

It could, and should, have been a lot more convincing a win for Maurizio Sarri’s side out in Greece, but they got the job done nevertheless. Despite resting the in-form Eden Hazard, Chelsea fielded a strong side but could not build on an early goal before settling for a one-goal win. They had the chances to, but the form of Alvaro Morata will remain a major concern and while Pedro also went off injured, they claimed the three points they were there for.

Celtic – WINNERS

Leigh Griffiths is desperate to working his way into the Celtic starting line-up — Leigh Griffiths is desperate to work his way into the Celtic starting line-up (Andrew Milligan/PA)

Arsenal – WINNERS

It was always likely to be a convincing win for the Gunners against Ukrainian outfit Vorskla Poltava and, after a slow start, Unai Emery’s side showed their class. It clearly remains a work in progress for the Frenchman at the Emirates, but there was the pleasing sign of Pierre-Emerick Aubameyang getting on the scoresheet. He had only netted once this season before his well-taken double, which will give him a boost ahead of the weekend, while there were also good run-outs for Lucas Torreira and Bernd Leno.