I'd give 300k to each of my 2 sons. 400k to spend as the wife and I choose. The remaining £4 million would put into bonds - would prob. get £120k pa - £80-90k after tax. Could live quite comfortably on £1,700 a week, and do pretty much whatever we have ever wanted to do. When we've gone, the £4m is still there, subject to an accountant keeping the govt's hands off it..