When technology shares plunged on fears that “artificial intelligence (AI) will kill us all” this 150 year-old London-listed business saw its stock surge 8% higher on Monday and another 6% yesterday. That means it has gained 43% since I invested in March, as reported at that time. Better still, this business still yields 3.2% income after increasing or sustaining dividends for 35 years without fail, and might have further to grow.