GOLD KIWI AND LIME TRAYBAKE

• 225g unsalted butter, softened, plus extra for greasing • 225g caster sugar • 3 British Blacktail Free Range Medium Eggs • 250g self-raising flour • 1 tsp baking powder • 1⁄2 tsp fine salt • 5 tbsp whole milk • 4 unwaxed limes, zest • FOR THE TOPPING • 75g unsalted butter, softened • 75g icing sugar, sifted • 150g soft cheese • 1 unwaxed lime, juice • 4 Waitrose Gold Kiwi fruits, peeled and sliced