They probably changed their terms and conditions!
It's likely they'll give you a year or two free business banking - which gives you time to look around for the best free banking deal for you.
I had two years free with Barclays, then changed to Lloyds and had two years with them - but it ran out about a year or so ago, quite a few of my customers pay by bank transfer and have my account details - If i change to Santander I'll have to update the customers too.
What I'll save on bank charges will pay for some healthcare insurance - so I'll definately be better off