Your mortgage stands at £171,790 with projected clearance in November 2040, nearly eight years ahead of contract—a trajectory substantially shaped by your £250 monthly overpayments, which have already saved £26,042 in interest and accumulated £9,600 in principal acceleration. The overpay-versus-invest analysis suggests that over a ten-year horizon, redirecting that £250 monthly into equities would generate £16,041 in profit against £7,880 in interest savings, Sir, making the investment case marginally stronger from a pure returns perspective, though your current approach trades that mathematical edge for psychological certainty and reduced leverage ahead of your July 2027 rate reset. With 57.1 percent equity and £63,241 in remaining interest, your position remains healthy but worth monitoring as rates reset in thirty months. Systems nominal: mortgage analytics, rate tracking, and overpayment modeling all current.