Jude Law decided against throwing a big party for his 40th birthday and instead marked the milestone with a quiet family lunch.

The British actor turned 40 on 29 December (13) and he celebrated by gathering all his relatives together for a meal in London, and Law admits he doesn't regret keeping the bash low-key.

He says, "It was a beautiful, happy day. A big lunch surrounded by all the people I love most in the world - my children, my parents, my sister, my nieces and nephews, my godparents. Dad made the loveliest speech... I felt very happy. Very at peace."

The Sherlock Holmes star also reveals he vowed to make positive changes to his life after hitting the landmark age.

He adds, "It feels like a very real time to take stock and make changes for the right reasons... I've thought about what I like and what I don't like about myself and I've realised that there are sides of myself that only I can change. And I feel like I can move forward now, propelled by everything that has gone before. But not bogged down by it."