[1] The mints were originally manufactured at Rowntree's York factory, before production transferred to Castleford, West Yorkshire, in 1970.

For the UK market they are now manufactured in Halifax following Nestlé's closure of the Castleford factory in 2012, with over one billion After Eights produced every year.

In 2002, however, Nestlé started adding butterfat to After Eights made at certain production facilities so as to increase resistance to chocolate bloom.

The fondant in the centre of After Eights is made from a stiff paste of common sugar, water, and a small amount of the enzyme invertase.

[citation needed] After Eights are certified kosher dairy by the Orthodox Union.