The Marigold Foot Clinic at the Royal Homeopathic Hospital specializes in treating complains such as foot warts and veruccas. They are treated with herbal and homeopathic treatments made from varieties of the marigold flower. Although treatment is free, you will need a referral from your NHS doctor. The Hospital is in Greenwell Street,London W1, tel: 020 7391 8878. Another reader reminds us to place a banana skin on the wart, secure with a plaster, and replace every day and night for a week. It works, our reader assures us.