human
Considering the provided database schema and associated query, produce SQL code to retrieve the answer to the query. 
###Database Schema: Period ended, Turnover (£m), Profit before tax (£m), Dividend per share (p), Adjusted earnings per share diluted (p)
###Question: What was the profit before tax when the turnover was 431.06?
gpt
SELECT Profit before tax (£m) FROM table WHERE Turnover (£m) = 431.06