Preheat oven to 350°F
Grease a 10 to 12-inch bundt pan, ensuring you get in all the cracks and crevices.
In the bowl of a mixer, beat the butter and sugar together on high speed until fluffy, about three minutes.
While the butter and sugar are mixing, combine the flour, spices, salt, baking soda, and baking powder in a separate bowl. Whisk the ingredients well to combine.
Add the eggs, one at a time, beating well and scraping the bottom and sides of the bowl after each addition.
Add molasses, golden syrup, vanilla extract, and grated ginger and stir to combine.
Add the flour mixture in three additions, alternating with the buttermilk. Start and finsih with the flour. Mix until just combined.
Gently fold in the pears.
Pour the batter into the prepared pan. I like to gently tap the bottom of the pan against the counter to ensure that the batter has filled all the crevices, especially if it is a bundt pan with a heavy design. Smooth the top of the batter with a spatula.
Bake the cake for 55 to 65 minutes until a cake tester inserted into the center comes out clean.
If you are making the glaze, go ahead and do that while baking the cake.
Remove the cake from the oven and let it cool in the pan for 10 minutes before turning it on a rack to cool further.
Once the cake is cool, drizzle the glaze over it.