Photos: Prince George arrives for his first day at £20,000-a-year school with his father, Prince William

William and Kate's son, four-year-old Prince George arrived for his first day at school - Thomas's Battersea, this morning with his father, Prince William, looking smart in his uniform - a blue official school jumper with red logo, blue Bermuda shorts and blue socks with laceless shoes.

His pregnant mother, Kate, however couldn't make the trip as she was bed-bound due to her acute morning sickness; Hyperemesis Gravidarum, which can cause sufferers to vomit up to 50 times a day. 

William held his son 's hand tightly as they approached the door - 30 years after his mother Diana did the same for him on his first day. The prince will be known as George Cambridge to his classmates.