As far as I can see the instant access Barnsley Building Society, Online Saver Account, is not an account that offers an introductry offer for 12 months before you have to ditch and switch, instead it's offering a reasonable rate of 2.5% variable. The Online saver is an internet banking account which gives great access 24/7, more information here:

Barnsley Building Society - High Interest Savings Account | Online Saver | Barnsley Building Society

Our Online Saver Account is the best of both worlds – a high interest savings account with easy access.

  • Minimum investment of only £1. Maximum £1,000,000
  • Online, paperless application
  • Manage your account online, 24 hours a day
  • Unlimited number of withdrawals
  • Monthly and annual interest options.