The nationalised bank is facing rising numbers of savings account applicants - due to the public uncertainty over banks' financial stability.
Government-owned bank Northern Rock is to pull some of its savings offers due to excessive customer demand.
Potential savers are being turned away due to the bank's commitment - unique in the UK - to protecting 100 percent of all deposits. Elsewhere, just £35,000 of savings are guaranteed for customers whose bank collapses, although the government is to raise this total to £50,000.
Northern Rock wishes to cover no more than 1.5 percent of the UK savings market - and suggested in an emailed statement that it was in danger of going above this figure thanks to an influx of customers.
At the root of this apparent "flight to safety" is the recent worsening of credit crunch conditions, which has resulted in severe market turbulence and government bailouts of several banks across the world, including British lender Bradford & Bingley. With rumours circulating about the financial stability of other banks, many savers are nervous about their provider collapsing and are looking to have their deposits better protected.
Nevertheless, the move is surprising, in the context of comments from payments association APACS reported by the BBC. According to the organisation, which monitors money transfers in the UK, there has been no apparent exodus of savers transferring their money from high street banks and into government-guaranteed accounts.
Northern Rock said in the statement that it did not want to take "unfair advantage of government support".
It added: "Recent turbulence in financial markets has led to a sizeable inflow of retail deposits, particularly in recent days, and Northern Rock is therefore taking further action to moderate its product range and product pricing, to uphold its competitive commitments."
Some of the bank's fixed-rate bonds and its Silver Savings, Silver Savings 30, Business Reserve accounts are to be withdrawn today.
