The phrase "a bigger authority" is correct and can be used in written English.
It is typically used to describe someone or something that has more power or influence than others in a particular field or situation. Example: "As a government official, she was considered a bigger authority on economic policies and was often consulted for her expertise."
"When they are cornered, they go to a bigger authority, either to redistribute blame for a failure or to get support and extra money.
If you have problems with that, and heaven knows I do, you'll have to take it up with a bigger authority than the guardians of our art museums, who one by one are giving up on no-photograph policies.
"It's true that it's a big authority but that does not mean it can absolve itself of responsibility," said Mr Mahmood.
Moreover, Luzhkov has a huge political machine, well greased with patronage, and no one gets in line more quickly than Russians when they see a big authority coming down the road.
Many people will know of Brian Redhead as one of the famous voices of the Today programme but he was an even bigger authority on his home ground.
At first, "Atlanta Monster" feels almost like a different genre from "Up and Vanished"—a big leap forward in narrative authority and sophistication.
A big urban authority such as Birmingham will see its schools receiving £45m per year, while an authority such as Wokingham, in the South East, with relatively few poorer pupils, will see its schools receiving £1.25m.
Ouseley made history as Britain's first black chief executive of a big unitary authority when he took control of staff at the Inner London Education Authority in the late 1980s.
Congestion charging is most likely to work when it is backed by a big local authority, covering all or most of a travel-to-work area, with power over both roads and public transport.
"They are now equating a small district council like Copeland with a big unitary authority like Northumberland or Cornwall.
But "Stop HS2" campaigners think that instead of battling over their own rival HS2 schemes, they should join those other, bigger authorities who have come out against it.
