Nutricentre 's nutritional therapist provides Driver - Davies health benefits . They are drying , filtering , storing and selling rainwater . Nutrient - rich birch bark has diuretic properties and good health benefits .
Nutricentre 's nutritional therapist Lorna Driver-Davies explains benefits . Companies are harvesting , filtering , bottling and selling rainwater . Nutrient-rich birch water has diuretic properties and good health benefits .