You cannot use strike off to try and escape your debts. One of the main requirements for Company Strike Off is that your business is solvent and can repay all its creditors. If you try to dissolve a limited company with debts, your creditors will usually object to the strike off so they can take action to collect the money they are owed.
If there are no objections and you dissolve a company with debts, your creditors can still take action against you. They can apply to the court to restore the company to the register and claim the money they are owed. That will leave you in a very precarious position, as trying to strike off an insolvent company can lead to severe penalties, including fines and personal liability for the business’s debts.
If your company has debts it cannot repay, you will need to close the company through a formal insolvency process such as a Creditors’ Voluntary Liquidation (CVL).