He lost his council seat in 2001 , and subsequently defected to the UK Unionist Party ( UKUP ) .
By 2000 , Robinson had become a prominent critic of UUP leader David Trimble .
Robinson lost Robinson 's council seat in 2001 , and subsequently defected to the UK Unionist Party ( UKUP ) .
By 2000 , Robinson had become a prominent critic of UUP leader David Trimble .