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Great Britain 1-2 Australia - best-of-three tie
Singles 1: Heather Watson 4-6 6-7 (3-7) Storm Sanders
Singles 2: Harriet Dart 7-6 (7-3) 6-2 Ajla Tomljanovic
Doubles: Alicia Barnett/Olivia Nicholls 6-7 (1-7) 7-6 (7-5) 6-10 Storm Sanders/Sam Stosur
GB's first semi-final in competition since 1981
Second semi-final: Switzerland v Czech Republic (after GB v Aus)
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And so that is that. Great Britain are out of the Billie Jean King Cup despite a remarkable effort against Australia, who will now go on to play Switzerland or the Czech Republic in Sunday's final.
You'll be able to watch a stream of that semi-final shortly and, of course, we will have coverage of the final from 14:00 GMT.
But that's all from us today. Thanks for joining us.
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Russell Fuller
Tennis correspondent at Emirates Arena
Great Britain will need to play a qualifying tie in April to return to the Finals next year. The draw is tomorrow.
Unless, that is, they end up hosting again - and that is far from impossible.
Let's hear from the winning doubles team...
Sam Stosur: "It's better playing than watching. It was such a tough match and nothing in it. No-one deserved to lose. Well played to the whole GB team, you've had a great week."
Storm Sanders: "That was amazing. it could have gone either way and credit to the GB girls they played really well. They will be here again for sure."
Seven-time champions Australia are through to their 19th BJK Cup final, their first since 2019.
Prior to that occasion, they hadn't reached the final since 1993.
Barnett/Nicholls 6-7 (1-7) 7-6 (7-5) 6-10 Sanders/Stosur
What an effort though from Nicholls and Barnett. This week has marked their debuts in the BJK Cup and their performances have been extraordinary.
Also worth remembering that GB were knocked out of the competition in April, only qualifying for the Finals as the host nation, yet they fought with all of their might to get to a match tie-break in the semi-finals. An incredible run from Anne Keothavong's team.
Mel South
Former British player on BBC TV
There are tears in the eyes of the British players.
Obviously this is a huge disappointment but everyone should be so proud of their effort.
They will be so motivated for the future.
Barnett/Nicholls 6-7 (1-7) 7-6 (7-5) 6-10 Sanders/Stosur
The win is Australia's as Storm Sanders finds space at the net. They wrap up a three-set win over Olivia Nicholls and Alicia Barnett, and with it, a 2-1 win for their country over Great Britain.
They are through to the final of the Billie Jean King Cup, where they will face Switzerland or the Czech Republic.
*Barnett/Nicholls 6-7 (1-7) 7-6 (7-5) 6-9 Sanders/Stosur
Australia extend their lead with a forehand winner at the net from Sanders and then a terrific forehand on the volley from Stosur.
Three match points Australia.
Barnett/Nicholls 6-7 (1-7) 7-6 (7-5) 6-7 Sanders/Stosur*
Better from Sam Stosur with a soft touch at the net.
*Barnett/Nicholls 6-7 (1-7) 7-6 (7-5) 6-6 Sanders/Stosur
Another error from Sam Stosur and we are LEVEL in the match tie-break at 6-6.
*Barnett/Nicholls 6-7 (1-7) 7-6 (7-5) 5-6 Sanders/Stosur
Another error from Sam Stosur and GB narrow the gap, even more so when Storm Sanders nets a forehand from the baseline.
Barnett/Nicholls 6-7 (1-7) 7-6 (7-5) 3-6 Sanders/Stosur*
Australia edge more ahead as they get the mini-break on Alicia Barnett's serve.
That lead is then further extended as Barnett nets.
*Barnett/Nicholls 6-7 (1-7) 7-6 (7-5) 3-4 Sanders/Stosur
Australia level at 3-3 and my word this is nerve-wracking. But this is also sport at it's finest.
An overhead smash at the net from Sanders edges the Aussies into the lead.
Gigi Salmon
BBC Sport tennis commentator
Everybody looks tense in this arena right now.
Barnett/Nicholls 6-7 (1-7) 7-6 (7-5) 3-2 Sanders/Stosur*
3-2 at the end of GB's serves as Sanders perfectly executes a lob.
*Barnett/Nicholls 6-7 (1-7) 7-6 (7-5) 2-1 Sanders/Stosur
Australia level on Storm Sanders' serve but Sam Stosur then punts a return long.
Barnett/Nicholls 6-7 (1-7) 7-6 (7-5) 1-0 Sanders/Stosur*
The first point goes GB's way as Sam Stosur goes long.
*Barnett/Nicholls 6-7 (1-7) 7-6 (7-5) 0-0 Sanders/Stosur
Right, here we go. Match tie-break.
Deep breaths.
Barnett/Nicholls 6-7 (1-7) 7-6 (7-5) Sanders/Stosur
THEY'VE GOT IT!
GB win the tie-break and with it the second set, and we are going to a match tie-break.
Billie Jean King is in the crowd and she must be loving this. Haven't seen her singing along to the band yet though.