The industry event kicks off on Wednesday.
Channel 4 will move 300 staff out of London.
Leith said she will be tougher on this year’s contestants.
The TV baking extravaganza will return to screens this week.
A number of Channel 4 shows will return and new commissions have been unveiled.
Singer Amy Macdonald is also pencilled in for a role in the final series of the BBC comedy.
Hosts Noel Fielding and Sandi Toksvig will go Back To The Future in opening skit.
The judge also revealed host Sandi Toksvig helped inspire another challenge on the new series.
Former footballer Jermaine Pennant was given a pardon and not nominated.
House president Kirstie Alley will be able to save a contestant of her choice.
One former baker advised the new contestants to drink while watching themselves back on the show.
Soap stars are in short supply in 2018.
She has said the show will be ‘a real treat’ after the line-up was unveiled.
Celebrity Big Brother winner Courtney Act set to host Britain's first ever bisexual dating series.
Final line-up for Strictly Come Dancing confirmed. See who will be competing this year...
The Loose Women star said she would not start drinking until after 10pm.
Former Love Island contestant Sophie Gradon was found dead in June.
The brunette Loose Women star sported a blonde hairdo.
The series follows two competing newspapers.
Just 32 years separates the youngest and oldest contestant.
The former Coronation Street star is a gym devotee.
The popular series ran for four years from 2006.
Fifteen famous faces are set to appear in the glitzy show.
The two stars were unveiled on Good Morning Britain.
Courtney won Celebrity Big Brother earlier this year.