Andy Burnham is set to unveil a long-term political plan on Monday, describing his vision for a decade in office. The reporting frames the plan as “left-wing” and says Burnham aims to outline how the next government would approach taxes and public policy. One account specifically claims the strategy includes proposals described as “tax raids” targeted at middle-class people, particularly in southern parts of the UK. The same report characterizes the plan as part of a broader mission and indicates Burnham is positioning himself as a would-be prime minister. Based on the available excerpts, details of the specific measures, timing, and scope are not provided beyond the general claim that taxation would be a central element of the plan. No other sourced details or counterpoints are included here, so the synthesis is limited to the common elements: a scheduled Monday announcement, a 10-year framework, and references to left-of-centre politics and taxation affecting middle-class voters.