Drac like many people occasionally has to entertain his parents for a day and convince them that he is a real human being. This will usually involve lunch somewhere.
Taking parents out is a bit different from going out with you scummy lot. Super expensive not required, but it wants to be a nice place that serves decent meals and actually has a pleasant dining experience rather than "bolt on because we can flog food with booze".
Have been acquiring suggestions from work colleges + own experience and making a list here for reference next time. Suggestions welcome particularly biased to classic English dining because Drac's parents are white middle aged middle class of whom one considers pepper to be a spice and all spice to be evil. For many of these booking in advance is recommended.
Chop House St Johns: http://cambscuisine.com/st-johns-chop-house Good food, though very stingy with the portion sizes for the Sunday roast. Best stick to the main menu.
Hole in the Wall: Run by a masterchef finalist, apparently very good with excellent service. Driving Required. Booking Sunday lunch well in advance is pretty well mandated. http://holeinthewallcambridge.com/
Jamie's Italien: Italian in the centre of town, it's actually been pretty decent when I've been. Has a "no bookings" policy so not advised for peak-time dining.
The Plough and the Ancient Shepherds in Fen Ditton. The Plough is basically not a pub except that you pay before rather than after eating. The food is amazing although so are some of the prices. Book at weekends in term time. The Ancient Shepherds is a throwback to the 80s in decor and demeanour but the food is *really fucking good* for only medium prices- it is a food place that happens to be a pub rather than a pub that serves food. The other advantage to both these places is that they are in Fen Ditton which means you can have a nice gentle walk by the river if your relatives are in to that sort of thing. --Pufferfish
The Backstreet Bistro, Sturton Street Another out of the way undiscovered gem. Very high quality usually-traditional-English food at reasonable prices and the best bit is that you can, with a little patience, actually take a cat there without paying in the daytime if you're good at parallel parking. Fills up on weekday lunches with posh executive types though I've never yet had to book for lunch or dinner as long as I was there early. --Pufferfish
The Missing Sock: A little bit further out and requires a designated driver. Quirky place and tasty food. Quaffable wine too. May require checking the menu before going, as dishes may be on the original side. --rainbow_kitten
The Oak Bistro In town, Lensfield road, on the corner of that massive crossroads by Parker's Piece with the church, which means parking not too far away. Very, very nice fancy food and good cocktails too :D (Excellent if your parents are footing the bill...) -Hobnoblin