I will be in London on the 20th. Technically we may be attempting to have a 'Get-all-our-friends-to-say-goodbye-to-the-house' party, but my father is failing to organise it, and I might be free in the evening anyway. So would you let me know the details of your party if you have one, by email or phone?

Thank you for coming to my birthday meal - it was very lovely to see you. :)