Branches in the snow

and sledging in extras

Old friends that I used to design with, round for lunch. They are architect and designer couple as are G and I, so it works well; have known them for decades but don't see them enough. 
There younger son, who occasionally worked for us when we ran our eco-building company has just had his 40th birthday. And my best friends son, is about to be 50! Where have the years gone and were any of them worth worrying about?