It is the largest-ever closure plan by the company and will radically change the face of the bank, according to Unite.
EXCLUSIVE: 11 Scottish murderers let out of jail for Christmas Day
Heart can reveal 11 murderers were let out of jail in Scotland to celebrate Christmas with their families last year.
Exclusive data shows 59 violent criminals were allowed to walk free for a festive break.
A further 44 inmates, who are doing time for drug and gun crime, spent the 25th of December out of prison.
Neil Moore from the charity PETAL which supports the families of those killed, said: "These figures will be disappointing for some families at this time of year. To say Christmas is the most difficult time of the year is an understatement. This will add to the grief and trauma."
Of the 103 serving prisoners who were not in jail last Christmas, 7 had been convicted of attempted murder, 34 for misuse of drugs and 26 for assault to severe injury.
Connor Gillies has our exclusive report:
A spokesperson for the Scottish Prison Service said: "1.3% of population were on home leave. 7464 people were in custody on 25 December 2015 while 103 were on home leave.
"A rigorous risk assessment is undertaken prior to any offender being granted unescorted leave. Those on home leave are released on license conditions. Home leave is an important part of reintegration as an individual can be tested on how they cope in the community, and this helps form the parole board decisions.
"Home leave happens throughout the year, not just over the festive period."
The SNP claims a "Hard Brexit" will cost 80,000 jobs in Scotland.
A bullet has been recovered from a tree where a man was shot near a primary school.
Scotland's jobless total rose by 11,000 in the three months to November.
Most Viewed Pictures On Heart
Recently Played Tracks
To listen live, choose your preferred location:
Deposit £10 to get a £40 Welcome Bonus - That's £50 to play bingo, slots and more!*
Over 50 tracks to make you feel-good. New album out now...
Find your local four day weather report here.
Make Heart the soundtrack to your day and you could be a winner with great prizes up for grabs throughout the day.
Find out more about some of the companies advertising on Heart Scotland- East.