Working in publishing with Level 3 qualifications such as A Levels or BTECs
Publishing is a very competitive industry. Most people applying for jobs will have a degree.
You might find it hard to get in with just A levels or similar. However, with good GCSE and A level grades, you could get a job in administration, operations or production roles. Relevant work experience or voluntary work could help you prove what skills you have and help you to get a first job.