That’s not a chart of “real rates”, that’s the spread between a 10y rate and a spot inflation estimate. Real rates is (ideally) the rate paid on an inflation linked bond, or at least the k-year rate minus the k-year forecast inflation. The BoE have historic data here going back to ’85 and the rally is several hundred basis points less than your chart implies.
That’s not a chart of “real rates”, that’s the spread between a 10y rate and a spot inflation estimate. Real rates is (ideally) the rate paid on an inflation linked bond, or at least the k-year rate minus the k-year forecast inflation. The BoE have historic data here going back to ’85 and the rally is several hundred basis points less than your chart implies.