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_2856898_1 (profit_before_tax__£m_ VARCHAR, turnover__£m_ VARCHAR)

### Question ###
What was the profit before tax when the turnover was 431.06?

### Accurate SQL ###

SELECT profit_before_tax__£m_ FROM table_2856898_1 WHERE turnover__£m_ = "431.06"