I have ceased trading, so I want to cancel my subscription. Will I be able to access data once it has cancelled?

Thank you for posting here on the Community, hollandp68.

I can guide you on how to cancel your QuickBooks Online (QBO) subscription,hollandp68.

You can cancel your QBO account on the Billing & Subscription page. Then, your data will be available in read-only access for one year from the cancellation date.

Here's how: 

1. Go to the Gear icon.
2. Choose Account and Settings and click Billing & Subscription.
3. In the QuickBooks section, select Cancel (paid subscription) or Cancel Trial (if you’re using a trial).
4. Click Continue to Cancel twice.
5. Finally, answer the exit survey questions (to help us make QuickBooks better), then scroll down and select Confirm Cancel.

Then, you'll receive an email confirmation that you canceled your online subscription plan.

To transfer your data, you can export and import your list and other data in QuickBooks Online.

Check out this link to know what will happen to your data after canceling QuickBooks: Cancel your QuickBooks Online subscription or trial.

I've also added this link here to guide you along the way: What happens to my QuickBooks Online data after I cancel?