Mr T rolled our top fields about 3 weeks ago - they've been rested and look good now, all being well Storm and Chloe will be in them next week after her treatment. Tbh if you get a good dry spring like now, you can start rolling any time. Mr T tries to keep on top of the gateways too - they benefit from a roll and then rest - in spring or late winter providing you don't do more harm than good ie, if it is too wet and claggy.
We don't harrow.