Stars come out to help celebrate couple's happy news
The pair announced their plans to marry in a notice in The Times last month.
And to mark the occasion Uma, 38, and Arpad, 45, opened up their West London home for a dinner party.
Uma has been married twice before, to actors Gary Oldman, 50, and
Ethan Hawke, 37 – with whom she has 2 children, Maya, 10 next week, and Levon, 6.
Swiss financier Arpad was previously engaged to Elle Macpherson, 44. They have 2
sons, Flynn, 10, and Cy, 5.