At a 5% rate of return, that would yield £250,000 (276 ,585 or $373,500) annually.
The UK median wage in 2009 was £25,428 (28,132 or $37,989) meaning that at that same 5% if you had £508,560 (562,640 or $759,789) you could get the same amount of money each year that the average worker makes.
It seems like comfortable means different things to different people. And I'll give my consent to any government that does not deny a man a living wage-Billy Bragg
at that same 5% if you had £508,560 (562,640 or $759,789) you could get the same amount of money each year that the average worker makes.
1 million (euro, pound, dollar) roughly allows one person to live on a moderate income... That qualifies as "comfortably poor"