By City A.M. Reporter High street bellwether Marks & Spencer is expected to reveal a jump in annual profits on Wednesday when it reports back after a bumper year. The retailer has enjoyed buoyant sales across its food halls and clothing and home arm, having undergone a significant turnaround plan in recent years, including cost-cutting and store closures. It has also delivered cheer for investors, resuming its dividend payout in 2023 after a four-year pause, in a year that also saw it return to the FTSE 100 Index. Most analysts are pencilling in a 35% rise in underlying pre-tax profits to £653…