SIR – Today marks World Day for Animals in Laboratories – a day, recognised by the United Nations, to remember the millions of animals who have been used and killed in animal experiments around the world.

Every year inside British laboratories, more than three million animals are subjected to experiments.

Animals are sentient creatures, capable of experiencing pain, fear, loneliness, frustration and sadness. To incarcerate them and inflict pain on them in the name of science is unacceptable.

And not only are these experiments cruel to animals, they are also potentially harmful to people, because species’ differences mean that the results cannot reliably be extrapolated to humans.

Contact Animal Aid for a free End Animal Experiments pack at or on 01732 364546.

Ashley Owen, Animal Aid, The Old Chapel, Bradford Street, Tonbridge, Kent TN9 1AW