There is a searchable list of approved legal aid solicitors and law firms on the government’s legal aid website http://find-legal-advice.justice.gov.uk/.
Legal aid would only be available if your financial resources were within the limits set by the Legal Aid Agency. To check if you are eligible for legal aid please visit the government website https://www.gov.uk/check-legal-aid
If you are awarded money or property as a result of your case, you may be asked to pay back some or all of the costs funded by Legal Aid.
The rules around legal aid in Scotland and Northern Ireland are different from England and Wales so please check in your country for availability.