Make the Cake: Preheat oven to 170c. Grease and lightly flour 8 1⁄2" x 4 1⁄2" loaf pan.

In a large bowl, whisk together flour, baking soda, and salt. In a second bowl, with mixer on medium speed, beat sugar, butter, cream cheese, and lemon zest until smooth. Beat in eggs, one at a time, scraping side of bowl as needed and beat in vanilla. In two batches, beat in flour mixture until just combined. Fold in raspberries with a spatula.

Transfer batter to a prepared loaf pan and smooth top. Bake until a toothpick inserted into center comes out clean, 1 hour 5 minutes to 1 hour 10 minutes. Cool for 10 minutes on wire rack. Loosen side with a small knife and invert onto rack. Let cool.

Make the Glaze: Meanwhile, in a blender, purée confectioners' sugar, cream and jam, scraping down the sides as needed. Drizzle glaze over cooled cake and serve.