Assistant immigration officers check that people have the right to visit or stay in the UK.

Astronauts fly spacecraft and do experiments in space.

Astronomers study the origin and structure of the universe, including its planets, stars, galaxies and black holes.

Athletes compete in track and field events for their clubs, with some going on to represent their country at international level.

Audiologists and hearing aid dispensers work with children and adults who have hearing loss, tinnitus, or problems with balance.

Audio visual technicians set up and operate sound, lighting and video equipment at events, conferences and performances.

Internal and external auditors check organisations' financial records and procedures to make sure they are accurate and efficient.

Auto electricians fit, service and repair the electrical systems in motor vehicles.

Automotive engineers design, test and build cars, vans, lorries, buses and motorbikes.

Bailiffs collect debts or give notices, summons and court documents.