While this account can be opened online it can only be managed by post or over the phone which is not going to suit every potential investor.
Also, despite the 1% bonus (payable until 21st April, 2010) the rate of interest paid on this account is variable and so it could drop at any time. This means that you will need to keep an eye on the interest rate to ensure that it remains competitive.
Finally, M&S do offer this account as either a full or partial fixed rate option too. However, while this can be tempting, better returns are available on other 'standard' fixed rate Cash ISAs so it's worth comparing it with the other accounts available before you sign up.
We have done our very best to make sure that the information included in this Deal is accurate. However, sometimes offers can be withdrawn or changed at the last minute so please do check that you're able to redeem this Deal before parting with any money, or going out of your way to take advantage of the offer.