John Whaite, Dane Baptiste, Sayeeda Warsi, Dr. Ranj Singh, Mr. Carrington, Ruby Bhogal, Gemma Atkinson

Steph's joined by John Whaite, Dane Baptiste and Sayeeda Warsi. Dr Ranj tells us how we can improve our brain power. Plus: Mr Carrington's shopping challenge and food from Ruby Bhogal.