What to pack on a day's walk

This is what I take for a day's walk in the UK (I'm a fair weather walker)

• A fleece/insulated jacket if you go up onto the hills
• A waterproof jacket
• Water
• A packed lunch
• A map and compass/GPS device
• mobile phone (for emergency calls & camera)
• lip balm
• Sun cream
• Torch
• Whistle
• Plastic bag (in case anything gets wet)
• First Aid Kit