I have 28k in five blocks of 5k, and 3k of random winnings, I usually get 50-250 a month (avg between 1500-1800 a year) from them way more than bank interest.
The most I've won in a lump was £750
*edit, had them since the early 90s
Interesting, maybe I should split mine up.
How much. Did you invest ?
15k



