Summary

  • Four-time winners Leinster through to Champions Cup final on 25 May

  • Leinster will face Toulouse or Harlequins at Tottenham Hotspur Stadium

  • James Lowe scored two tries as Leinster dominated first half

  • Lowe completed hat-trick in second half before visitors fought back

  • George Hendy and Tom Seabrook set up grandstand finish but hosts held on

  • Record 82,300 fans at sold-out Croke Park in Dublin

  1. Goodbyepublished at 19:48 British Summer Time 4 May

    FT: Leinster 20-17 Northampton

    That's all from us today - thanks for joining our coverage.

    Leinster are through to a third Champions Cup final in as many years, while Northampton crash out.

    Saints will now turn their attention to the Premiership run-in.

    You can read our report of Saturday's semi-final here.

    Until next time...

  2. Postpublished at 19:45 British Summer Time 4 May

    FT: Leinster 20-17 Northampton

    A reminder, Leinster will face either Toulouse or Harlequins in the final at Tottenham Hotspur.

    Those two sides meet in the other semi-final on Sunday.

  3. Postpublished at 19:40 British Summer Time 4 May

    FT: Leinster 20-17 Northampton

    The moment Northampton's dream fell away...

    Northampton playersImage source, Getty Images
  4. 'We have things we want to tidy up'published at 19:37 British Summer Time 4 May

    FT: Leinster 20-17 Northampton

    Speaking to TNT Sports, Leinster wing James Lowe said: "We were able to build a score and then we know Northampton are an amazing attacking side. We gave them too many opportunities and we didn't kick well.

    "Credit to them they pushed us to the end, we were pretty fortunate with a turnover and we will have a final at Tottenham Hotspur.

    "Croke Park is such a special place. There is not another stadium like this in the world. We have things we want to tidy up on if we want to win this competition."

    On his hat-trick, Lowe added: "I ran 10m in total for all three of them. There is a reason why Jamison [Gibson-Park] is the best nine in the world and there is one other [Antoine Dupont] who everyone will compare him to. He sees space no one else sees."

    James LoweImage source, Getty Images
  5. Leinster hold on to deny Saintspublished at 19:30 British Summer Time 4 May

    FT: Leinster 20-17 Northampton

    Paul Grayson
    Former Northampton and England fly-half on BBC Radio 5 Sports Extra

    Leinster dominated every aspect and forced the Saints into endless handling errors and yet Northampton found a way to stay in the game and almost stole the game at the death.

    In the end, a superb turnover from one of their international stars secured the win.

  6. Postpublished at 19:29 British Summer Time 4 May

    FT: Leinster 20-17 Northampton

    Still not sure how Saints mounted that late challenge.

    They had hardly landed a shot in the first hour. Credit to the East Midlanders' for staying in the fight.

  7. Full-time - Leinster 20-17 Northamptonpublished at 19:26 British Summer Time 4 May

    Leinster are into a third Champions Cup final in a row. Northampton are beaten despite a thrilling late fightback.

    What a semi-final.

  8. Postpublished at 19:25 British Summer Time 4 May

    Leinster 20-17 Northampton

    Chris Jones
    BBC rugby union correspondent on BBC Radio 5 Sports Extra

    How close Northampton got! They can't believe they gave away the penalty and Leinster will surely now go to Tottenham.

  9. Postpublished at 79 mins

    Leinster 20-17 Northampton

    Caelan Doris could be the hero for Leinster.

    Northampton cannot move him at the breakdown and the hosts win the penalty.

    Seconds to go.

  10. Postpublished at 78 mins

    Leinster 20-17 Northampton

    Saints are on the ball. Here they go.

    Fin Smith pulling the strings. Crowd on the edge of their seats.

  11. Postpublished at 77 mins

    Leinster 20-17 Northampton

    Three minutes to go, Leinster are trying to run the clock down.

    Northampton waiting for their opportunity to nick the ball at the breakdown.

    Tension.

  12. Postpublished at 19:21 British Summer Time 4 May

    Leinster 20-17 Northampton

    Paul Grayson
    Former Northampton and England fly-half on BBC Radio 5 Sports Extra

    There's the Northampton Saints we've been waiting for.

  13. try

    Converted Try - Leinster 20-17 Northamptonpublished at 74 mins

    Tom Seabrook (con Fin Smith)

    Game on.

    Northampton punch holes in the blue wall close to the line and Tom Seabrook is in unopposed in the corner.

    Fin Smith adds the conversion to reduce the deficit to three points.

    Where has this fightback come from? Momentum all with Saints now.

    Tom SeabrookImage source, Getty Images
  14. Postpublished at 72 mins

    Leinster 20-10 Northampton

    Jamison-Gibson Park is back quickly to cover Tommy Freeman's kick through.

    The Leinster nine grounds the ball over his own goal line but Saints will have a five metre scrum.

    This is the chance.

  15. In Leinster's handspublished at 19:16 British Summer Time 4 May

    Leinster 20-10 Northampton

    Paul Grayson
    Former Northampton and England fly-half on BBC Radio 5 Sports Extra

    Leinster will try to play high up the field and let the clock tick down knowing the set-piece dominance they have had throughout the game should be enough to see them through to the final at Tottenham Hotspur Stadium.

  16. Record attendance for semi-finalpublished at 71 mins

    Leinster 20-10 Northampton

    It's a record Champions Cup semi-final attendance.

    There are 82,300 partisan fans watching this tie at Croke Park. Some effort by all involved.

    FansImage source, Getty Images
  17. Ten to gopublished at 70 mins

    Leinster 20-10 Northampton

    Into the final 10 minutes, can Saints launch a fightback?

    Leinster still looking comfortable.

  18. Postpublished at 68 mins

    Leinster 20-10 Northampton

    The demands of a European Cup semi-final.

    Leinster have good ball but James Lowe decides to go aerial as the zip just seems to slipping out of the game.

    Lots of tired legs out there now.

  19. Postpublished at 65 mins

    Leinster 20-10 Northampton

    I have to agree with Mr Grayson on that. Courtney Lawes has been a constant menace at the breakdown.

    The forward is one of only five Englishmen to be capped 100 times for a reason.

  20. Magnificent Lawespublished at 19:06 British Summer Time 4 May

    Leinster 20-10 Northampton

    Paul Grayson
    Former Northampton and England fly-half on BBC Radio 5 Sports Extra

    Courtney Lawes is head and shoulders the best player in the Northampton team today and in the top two or three on the field.

    Courtney LawesImage source, Getty Images