Here's and option for you:
www.gordonandmacphail.com Goto their online shop and seek out their personalized labels. You can get bottles at many different ages, 40 being one of them, and they'll personalize the label. So you can have something like, 'Bottled exclusively for ... on his 40th birthday...'
If you don't know G&M, they are one of the premier independent bottlers of malt whisky, and have been since they started their whisky program in 1896. IMHO, they are the best of them (though there are others I like too).
Anyway, their 40 year personalized bottle is listed at GBP 138.50