We use Jamie Oliver (originally Wedgewood but now Churchill) for every day as the glaze is good and they have lasted well. However for mass catering (large groups and buffet parties etc) I have several (10) sets of the Value white crockery from Wilkinsons: they have lasted surprisingly well and although aimed at students (I think they were only £5 for 4 dinner plates, side plates and bowls though similar look to be £6 now) we have been really impressed: they get rolled out for all large gatherings: are bright white so can be mixed and matched with all other white crockery, and the glaze has lasted well. The bowls are great for Chinese food too. I'd really recommend them as a budget choice which can be styled up or down. these
I got 8 dishes, 8 plates, 8 side plates and 8 mugs for £35 for my first house almost 20 years ago and they're still in daily use. I'll never get rid of them. Expensive isn't always the best. Ikea has some great crockery. Very sturdy stuff. Looks like it'll last.
I can recommend Denby, they have an outlet shop with slight seconds. It's amazing quality. I've had mine almost 20 years and it's bomb proof. I've just decided to change it (for a different coloured Denby) as it doesn't match my kitchen.
Get them from a catering supplies place online (that supplies crockery etc to restaurants and businesses and so on). Usually fairly cheap, but extremely durable - much more than your bog standard consumer ones.