Channel 4 will announce the location of its new national headquarters later today.
Leeds, Greater Manchester and Birmingham are all in the running to host the new base.
The channel will also announce the locations of its two new creative hubs, with Glasgow, Cardiff and Bristol in contention.
Channel 4 announced its intention to move staff out of London to three new bases after the Government said the broadcaster will remain publicly owned, but faced being relocated.
The channel warned at the time that forcing it to move outside of London “would be highly damaging”.
It has since said that 300 Channel 4 jobs, including key creative decision-makers with significant spending power, will be based in hubs outside of the capital in the biggest change to its structure in its 35-year history, but it will still keep its Horseferry Road headquarters in London.
The new national HQ has been described as “a broad-based centre”, which will include commissioning, production and digital content.
The creative hubs will begin with a focus on programme commissioning, but will welcome a broader talent base later on.
The first-round pitch process was launched in April, with more than 30 submissions entered.
The second stage process involved Channel 4 visiting each of the 13 shortlisted cities and regions for a presentation and discussion.
When it was whittled down to the final six, the channel entered into detailed discussions with the selected cities in a process which will be led by Jonathan Allan, Channel 4 executive board member and chief commercial officer.