YOu have 2 choices to have a wage arrestment lifted.Trust Deed or Debt Arrangement Scheme.If you have a surplus Income that can pay your debts off in a reasonable length of time.
Do you have any assets to protect? House Car perhaps?
Do remember that no one else can arrest your wages.Well they can but it would be whats called a "conjoined arrestment".You can only have one other creditor arresting your wages BUT you will still only pay the same amount of £260 and its divided between 2 creditors. The Creditor has to apply to the Courts to do this and need their permission.
I would suggest that you contact http://www.moneyadvicescotland.co.uk
and get a Debt Advisor from there.
Do NOT go to Payplan or CCCS, great organisations but they CANNOT and DO NOT offer all options to Scottish clients.
I would need to know what your surplus Income is a month to give you better advice.To do that, check the I and E on the website I gave you-is Under Common Financial Statement, or use the one on the National Debtline Page.