Fill a large pitcher about halfway with ice. Layer in a generous handful of the strawberry slices, cucumber slices, and orange wheels so they are nestled beautifully among the ice cubes.
Pour the Pimm’s and clear sparkling lemonade over the ice. Stir gently with a long spoon to combine the liquid without losing the fizz.
Take your fresh mint sprigs and give them a firm clap between your hands before tossing them into the pitcher. This releases the aromatic oils instantly.
Fill four highball glasses with fresh ice and a few extra fruit slices. Pour the Pimm's Cup from the pitcher into the glasses, making sure each glass gets a colorful mix of fruit and a sprig of mint on top.