2033
You'll be 41
Median scenario: 2033 · Optimistic (90th percentile): 2032
From this point, your portfolio's expected monthly growth exceeds your £500/month contribution. Compounding is now doing more for you than saving is.
2057
Age 65, as set above
Projected balance: £956,234 median (69% of your £1,385,692 target)
Optimistic (90th percentile): £1,310,318. Conservative (10th percentile): £704,583.
2063
You'll be 70
Median scenario: 2063 · Optimistic (90th percentile): 2058
Your portfolio reaches your inflation-adjusted £750,000 target, covering £30,000/year of today's spending power. This lands after age 65, so it assumes you keep contributing past your target retirement date.