On a fixed rate cash ISA, early withdrawals can be made subject to an interest penalty. For Paragon, this depends on the term of the product, as shown on your product specific terms and conditions. If your account has been open for a shorter period than the penalty days relating to your product, then the difference will be deducted from your capital.
Closure of your account, transferring to another account with Paragon, or another provider, are classed as withdrawals.
If you have an easy access cash ISA, you can withdraw at any time, penalty free.
You can withdraw from a notice account cash ISA without penalty as long as you give the required notice period. If you want to access your money immediately you will incur a penalty charge equal to the notice period.