I and my wife Colin Weir, from Largs in North Ayrshire, won £161m when our numbers came up on 12 July 2011.
We have already given large donations to several causes, including £1m to the SNP's independence campaign.
Speaking as we celebrated our anniversary of our win, we said it was a "privilege" to be able to support causes close to our heart.
"It has been quite a year, exciting and challenging in equal measure, but we couldn't be happier. There is still an overwhelming sense of good fortune - we were incredibly lucky and will never forget that.
But, years on, the biggest change in our life is that we can now support causes close to our hearts in a more meaningful way.
It is a privilege to be in a position to see a situation where help is needed and be able to do something about it."
we helped raise funds for local 15-year-old tennis hopeful Ross Wilson to attend a tennis academy in Barcelona and 15-year-old race driver Gregor Ramsay to attend the European and Italian F3 European Abarth.
We have also donated money to help refurbish sports facilities for the National Sports Training Centre Inverclyde and the Largs Thistle Community Club, and helped secure the future of the Waverley, the world's last ocean-going paddle steamer.
What we've done in the past years is to achieve a balance between enjoying our new life to the full with recognising the real difference we can now make to others' lives.
We are currently in the process of setting up our charitable trust, which will support individuals, groups and charities across glob who are struggling to gain funds from the more traditional or mainstream grant makers.
"For us, that seems the best way for us to go on sharing our good luck."
What I am doing with my life
Giving out funds to charity homes
Things I like about myself
In love with the life because it was fair and came with a big gift with it am greatful.
My favourite outdoor activities are
Golf, and juggling around my grass santex field
My favourite indoor activities are
Just going through my the world in search of Charity homes that's all
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