A GROUP of four artists is holding an exhibition at St David's Hall, Castle Street, Hereford. They include Mike Purkiss, from Ledbury, with his paintings of people and places and Joanna Dixon, from Bromyard, who paints pets, houses and landscapes in watercolour and pastels. The Group of Four Exhibition runs from Tuesday (July 25), until Thursday, August 2. It is open daily from 10am to 5.30pm. Admission is free.