Yes, there is. Don't show up in German sandals.
Don't dress in white only - they might mistake you for a cricket
player. Men should were shirt and tie, a jacket is usually not
required. Wear decent trousers and clean leather shoes. Women can wear
both skirt and trousers, but again their outfit should not too casual.
Jeans are a not appropriate. Don't expect clean white coats every day.
Be grateful if you get a white coat of your size at all.