We found out what the occasion was - the clue was on the invite '0-0-0...'!
30 years married
60 years old - Chris
70 years old - Pete
The event was held in Wellingborough - 'Club Diana'. A kind of sport's club with a private room. The ambience, food and staff were all excellent! Jo and Janet did the driving and we got there for 7pm and got home around 11.30