What is one of the most popular sandwiches in the UK? A good old fashioned tuna mayo sandwich! Picture biting into a creamy tuna filling sandwiched between slices of bread together with thinly sliced cucumber... You have decadence, you have crunchy fresh veggies and comforting soft bread all in one bite! These budget-friendly and extremely easy-to-make sandwiches make a delicious lunch, or can be adapted to make fancy finger sandwiches for your next afternoon tea!