By Jon Robinson The UK arm of Mars Wrigley, which makes the likes of Mars bars and Skittles, has paid out a huge dividend of £600m after a bumper financial year. The business, which has UK manufacturing sites in Slough and Plymouth, has significantly upped its dividend for 2023, after also paying out £115m in 2022. The dividend hike comes after Mars Wrigley’s UK turnover rose from £1.23bn to £1.43bn during its latest financial year. Newly-filed accounts with Companies House also show that its pre-tax profit increased from £117.4m to £245.2m over the same period. As well as Mars and Skittles, t…