A substantial minority speak English as a second or third language.
The figure seems much too high, although no doubt there is a substantial minority that does think this.
Agriculture is the source of income for a substantial minority.
But the evidence is strong that a substantial minority do both.
Although a substantial minority remained of the 7,253 who fled Greece.
A substantial minority of Britain's population aged 65 + has never married.
But a substantial minority, 42 percent, took the opposite view.
This decision left substantial minorities on both sides of the new border.
But for a substantial minority, however, the improvements were much greater.
Still, a substantial minority - 31 percent - said supporting Lithuania was more important.