List the director and producer when Nick Hewer and Saira Khan were starring.
CREATE TABLE table_24725951_1 (directed_and_produced_by VARCHAR, celebrities VARCHAR)
SELECT directed_and_produced_by FROM table_24725951_1 WHERE celebrities = "Nick Hewer and Saira Khan"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_24725951_1 (directed_and_produced_by VARCHAR, celebrities VARCHAR) Question: List the director and producer when Nick Hewer and Saira Khan were starring. [/INST] SELECT directed_and_produced_by FROM table_24725951_1 WHERE celebrities = "Nick Hewer and Saira Khan" </s>