Question: how long to cook chicken in gas oven?
Answer: Learn how to test if a chicken is cooked and to joint it:
Roast at 200C/180C fan/gas 6 (whole chicken: 25 mins per 500g, plus an extra 25 mins; breasts, 15 mins; thighs and wings, 40 mins).
Grill or barbecue (breast, 7-10 mins; cubes or strips, 5-7 mins; drumsticks and thighs, 25-30 mins; wings, 40 mins).