I think there's a reasonable thing to add and that's risk. I might be more willing to accept a guaranteed £X than a 20% chance of a £10 * X payout, depending o

I think there's a reasonable thing to add and that's risk. I might be more willing to accept a guaranteed £X than a 20% chance of a £10 * X payout, depending on the X. My personal investment philosophy generally would recommend pulling out large single investments into broader funds even though the potential top payout drops.