There are some goods you cannot bring into the UK - they’ll be seized by customs.

These include:

• controlled drugs
• offensive weapons, for example flick knives
• self-defence sprays, for example pepper spray and CS gas
• endangered animal and plant species
• rough diamonds
• indecent and obscene materials, such as books, magazines, films and DVDs
• personal imports of meat and dairy products from most non-EU countries

hehe