Belt and braces investing: one global tracker plus a monthly direct debit is the safest, simplest, hardest-to-mess-up default for UK accumulators.
A single FTSE All-World or MSCI ACWI tracker already holds 3,500-4,500 companies in 47 countries. Adding more funds rarely adds more diversification.
Pound-cost averaging via direct debit removes the single biggest cause of retail underperformance: trying to time when to buy.
Yes, there are real reasons to overcomplicate it: bonds near retirement, a home-bias tilt, a value tilt in late-cycle conditions. But do not complicate it until you can name your specific reason. Until then, keep it simple.
