Lloyds Banking Group is cutting almost 1,000 jobs.
The Accord union says the company will close offices in Romford, Newcastle upon Tyne and Scunthorpe.
More than 30,000 jobs have now been lost over the past three years at Lloyds, which is 40 per cent owned by the taxpayer.
Accord general secretary Ged Nichols described the move as "devastating news" for employees and their communities.
A statement from Lloyds read: "Where it is necessary for employees to leave the company, it will look to achieve this by offering voluntary redundancy. Compulsory redundancies will always be a last resort.
"In fact, during 2009, 2010 and 2011, slightly less than 50% of the role reductions made as part of integration have led to people leaving the group through redundancy. There are 990 role reductions from today's announcement."
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