【That Uncertain Feeling / Kingsley Amis / 1955, 1985 Penguin】
--I put out my tongue at a painting of a former mayor, a tiny little wizened fiend of an auctioneer, which hung in the entrance-hall. (P11, One)
--On my recommending his immediate departure, he (a brown dog) gave an abrupt, crashing bark, like a rifle-shot on the soundtrack of a film about British India, and, with the demeanour of one making a lightning change of plans, ran off with all his strength after an invalid-car that was just popping its way round a distant corner. (P59, Five)
This book would also decolonise your shelf, for its subtle focus on Welsh culture being stealthily colonised in a restrained tone.
Colonialism - or interfering attitudes similar to it, but in a milder form - is just everywhere in this book. Mrs. Davies calls out the protagonist, John Lewis, for letting the his daughter crying alone (P108 Eight) - which was just her crying for a bedtime story after the sleeping time. He's also often demanded to familiarise himself with Welsh culture, but can't speak Welsh in spite of having lived all his life in Wales (P131, Ten). He also shares the worldview of the British Empire, just like 'It would take a Central or South American President (of a Republic, I mean, not a British Legion branch) to object to that (note: his workplace, a public life, exists for the fulfillment of lives of the citizens. P181, Fourteen).
This serious question of colonialism is, in this novel, layered with the lighter, often comical, nonetheless solemn problem of control and romance, like a forced affair in which both the protagonist and his mistress, Elizabeth, endure a slight unsettlement and discontent (P204, Fifteen). A forgotten novel, but with dexterity and moralistic integrity.