However, the company has now cleared its backlog of applications and is offering a range of products to both existing and new customers.
Chris Pilling, chief executive of first direct, said the company has "honoured the fixed interest rates available when people first contacted us about their mortgage".
"I'd like to thank customers for their patience during recent weeks and also to pay tribute to our team at first direct who have burned the midnight oil to complete a year's worth of mortgages in just three months," he added.
first direct's move has come after Abbey recently announced changes to its mortgage rates.
The lender has changed the rates on its two-year tracker and fixed rate mortgages, as well as on its three-year and five-year fixed products.
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