Borrowers might be under the cosh, but savers have never had it so good. Historically, when the Bank of England (BoE) base rate changes, mortgage and savings rates follow suit. But amidst the current credit crunch, those with spare cash and prepared to move their money around can take advantage of banks’ and building societies’ eagerness to attract retail funds.

The last time the base rate stood at its current level of 5 percent was 17 months ago — in November 2006. And there are huge differences between then and now in fixed savings rates. The top six-month fixed rate bond is now paying 1.59 percent more interest on a 10,000 pound investment, at 6.86 percent. Kaupthing Edge and Icesave top the best buy tables with that rate, Heritable Bank is close behind with its new offering of 6.80 per cent as of this weekend, and Alliance & Leicester this week issued a fixed rate bond with a competitive 6.83 percent. “With many people thinking  that the base rate is likely to fall further this year some of the fixed rate products available now look outstanding value,” says David Black, principal consultant for banking at financial research company Defaqto.

There is no saying, however, how long the good times will roll for savers, and those looking to take advantage of attractive rates should move quickly. Remember, too, that the maximum protection afforded under the Financial Services Compensation Scheme is 35,000 pounds per financial institution; those with more than that in cash reserves should split their pot between different providers.

In contrast, the credit crunch is continuing to hit borrowers and investors: overall, even those with substantial savings might wind up no better, or worse, off. The FTSE 100 index has dropped 9.32 percent over the past six months, according to stocks and shares Web site ADVFN.com. Its data highlights the extent of the volatility that has been hampering markets. Having opened the year at 6450.9, Britain’s blue chip index dropped to its lowest level of 5338.7 points on January 22 — a long way from its six month intraday peak of 6751.7 achieved on October 15. This equates to a 1413-point move — a 21 percent drop from the index’s high to its low. “There are no two ways about it; we are in a bear market,” says chief executive Clem Chambers. “In markets such as these where the underlying trend is down, strong rallies are commonplace, but the day-to-day weakness overcomes moments of strength overall. Breaking back up through psychological barriers such as 6000, unfortunately, does not mean the good times are back. This is bad news for investors but can be profitable for traders.”

And, in mortgage markets the London Inter Bank Offered Rate (Libor) — the most famous barometer for short-term interest rates in the world — continues to loiter stubbornly high in relation to the base rate. Libor, the rate at which lenders borrow money, determines mortgage pricing for consumers, and is now the “hoodie of the finance world” — symbolic of a fallen system, where banks lack the confidence to step out of their houses to trade with each other — according to independent mortgage broker Charcol.

The BoE’s discussions on the mortgage market will not necessarily improve the situation, according to Andrew Townsley, chief executive of Sheffield Mutual and president of the Association of Friendly Societies. “Even if market conditions improve, mortgage lenders are likely to continue to impose relatively high lending rates on mortgage products and the situation won’t necessarily improve for borrowers,” he warns. “Banks will be tempted to improve profit margins, and although lending rates may come back a little we won’t see them revert to the attractive levels borrowers have experienced over the last few years, for some time yet.”

Savings rates could soon take a turn for the worse, too: ”We can expect to see a drop in attractive saving rates as the situation eases, meaning the consumer remains yet again at a disadvantage,” says Townsley.

Not time to crack open the bubbly yet, then.