Is this the end of the regular saver?

Earlier this month, First Direct and HSBC cut their market-leading regular savings rates from 5% to 2.75% on new accounts, leaving M&S Bank as the sole 5% survivor. The cut means that, excluding M&S, the next best rate that's accessible to all is 3% from Virgin Money, much closer to rates offered on other types of savings accounts. So, are regular savers still worth saving in? We run the numbers to find out...