There's no need to buy anything before you attend your first class.
Please just bring whatever watercolour paints, watercolour paper and brushes you have. Feel free ask me any questions about art materials.
The below list are recommendations if you'd like to extend your art materials collection!
Seawhite Art Supplies: Star Road Trading Estate, West Sussex, RH13 8RY. They don't have an online shop so it's worthwhile taking a trip! They have various stockists and their supplies also sold on amazon. I also hold some paper & brushes so please do check if I have what you need in stock.
Winsor and Newton Cotman watercolour paints: these are available in many art shops and online but I've found the best deals at Hobbycraft and Artdiscount.