I have visited The Crown several times for Sunday lunch and many more for a pint after work. I used to live locally. Since moving to London I have been unable to find a comparable roast dinner in any pub/gastro pub! and we are planning to travel the half hour train journey back to Otford this weekend to enjoy a roast!
This is a 'no frills' pub, the staff and landlord/landlady banter and chat informally with you, the customers are a real mix and the food is presented the way your mum might do it -certainly not a gastro pub, decent portions for a start! They have 3 sittings throughout the afternoon and it is necessary to book, it's very popular!
My only complaint about this pub is the large TV they put on a lot of the time with the volume up. I usually put the juke box on and ask them to turn the tv down if there isn't any sport on. The staff and owners are really friendly, down to earth people. I am really surprised by the previous review!