According to my research via the Office for National Statistics:
600,000 people die each year in the UK
Cancers (26 different varieties) account for 134,362
Seasonal Flu accounts for 4,000
Heart Attacks account for 94,000
Other Cardio Vascular (excluding Strokes) account for 106,000
Murder accounts for 850
Suicide accounts for 5,500
Road Accidents account for 3,000
Stroke accounts for 67,000
Total 409,212
These figures are based on what is written on the death certificates and apply to 2007.