The board offered a variety of GCSE, A Level and other qualifications. Despite its name, schools in England, Wales and Northern Ireland were able to choose any of the examination boards and NEAB established itself as the biggest board in the UK.
In 1997, NEAB entered into an alliance with AEB/SEG and City & Guilds known as the Assessment and Qualifications Alliance (AQA). By 1999, examination papers were dual-branded with both the AQA and NEAB names on the papers and the 1999 examination certificates featured just the AQA name. In 2000, NEAB and AEB/SEG (but not City & Guilds) formally merged under the name AQA. As NEAB and AEB/SEG overlapped in the qualifications they offered, AQA retained two specifications for many subjects and do until this day, with schools able to choose between the two.