Answer
This type of insurance is commonly associated with car insurance and household contents insurance. It is often added to these polices at no cost, or for a few pounds.
If you need access to legal services and have Before The Event insurance you should consider using this rather than some other form of funding (such as a 'no win no fee' agreement). Your solicitor can advise you the best course of action.
Your employer, Trade Union, or any other body that you belong to (such as a sports club) may also have arranged insurance. If you believe you may be covered by such insurance you should talk to the appropriate body and take any relevant insurance documents when you go to see your solicitor.
For more information about legal fees see Paying for legal services.