Tuna rainbow salad - Good Food Middle East

Ingredients

• 1 red pepper, sliced
• 1 large carrot, grated
• 340g can sweetcorn kernels, drained
• 150g sugar snap peas
• 6 cooked baby beetroot, quartered
• 185g can flaked tuna in spring water, drained
• 100g mayonnaise
• 1 tbsp lemon juice
• 2 tsp wholegrain mustard
• 1 tsp water
• lettuce leaves
• 1 spring onion, sliced