Which sentence is correct?

0 OK, the BBC site shows both:02br
01b00402b00 from 01b00bbc.co.uk02b00 for 01b00"look forward to you joining"02b02br
01b00102b00 from 01b00bbc.co.uk02b00 for 01b00"look forward to your joining"02b02br
00I'd prefer the 2nd, but .. 0-

0Thank you so much for your response.02br
02br
00Could you say why you prefer the 2nd at all?0-

0Because we're both old-fashioned and see "joining" as the gerund that takes the possessive "your." What is being looked forward to is the JOINING.0-

1font00I look forward to 01b00you 02b00joining me for dinner - This is incorrect IMO. You may say "I am looking forward to having you to join me for dinner" 02font02br
02br
01font00I look forward to your joining me for dinner- Grammatically, it's correct. 02font0-

0 01blockquote

01cite10Englishbum12cite10I look forward to you joining me for dinner12blockquote

10This usage is quite common in English. However, prescriptive rules of grammar usually state that only 'your' would be correct.02br
00You can eliminate the problem completely simply by rewording the sentence a little:02b

0A search at 01b00google books02b02br
02br
05002br
00gives:02br
0023 on "look forward to you joining"02br
01b00 9002b00 on "look forward to 01b00your02b00 joining"02br
00which confims that the formal usage traditionally presented in books is "your." 02br
00

I look forward to you joining me for dinner.

"your" is possessive, belonging to you