Grocery heroes

The people at Ocado seem to have got it about right. With the help of a substantial investment from Waitrose, they’ve built a home delivery service that doesn’t require you to know exactly how to spell ‘brocolli’, that delivers for nothing if you spend over £75, that allows you to book slots in one hour increments and that delivers at 10 p.m. if you forget about Olly’s football practice and can’t be in when you said you would…