Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_25316812_1 ( authority VARCHAR, budget_limit__£m_ VARCHAR )

### Question ###
What is the authority who set the budget limit ( m) at 900?

### Accurate SQL ###

SELECT authority FROM table_25316812_1 WHERE budget_limit__£m_ = "900"