Emma Willis said goodbye to Big Brother before the last episode of the program.
The lecturer, who has hosted the reality show since 2013, has published a screenplay photo of the final on Monday night in the social media.
"Goodbye, my friend …" Willis, 42, wrote a message and added one emoji heart.
The show started on Channel 4 in 2000, but ratings have fallen in recent years, and in September of this year, Channel 5 announced that the 19th Series will be the last. Channel 5 took over the broadcast in 2011.
Former hostess Davina McCall also commented before the final.
Lecturer 51, who hosted 11 show series from 2000 to 2010, posted a video on Twitter from Manchester, where she filmed the Channel 4 game show The 100K Drop.
– Davina McCall (@ThisisDavina) November 5, 2018
She said: "I'm in Manchester working on The 100K £ Drop, so I can not be with you tonight.
"I really wanted to come and greet, but I just wanted to say good luck to Emmy, you're awesome and great, good luck, Rylane, I know it will be very emotional, I hope you have a great night.
"Good luck to all the crew who are working so hard on the show, I know it's going to be hard tonight, but I'm sending you so much love."
The final of the first series on Channel 4 in 2000 attracted 9.45 million viewers, but the last episode of the last series broadcast on Channel 5 in 2017 was followed by just 1.11 million.
The final episode of Big Brother broadcasts on Channel 5 on Monday at 10 o'clock.