Come off the A46 the junction before for Upper Broughton & Melton Mowbray, then turn west at Upper Broughton.
TBH sat navs are old hat, phone apps work a lot better, ( and they are free) I tried a load of them & found "waze" to be the best, it's constantly updated by users & gives the fastest routes plus alternatives. It even points out pot holes & road works.
I don't even look at the map on it any more, I just follow the instructions & never got lost once. It's clever too, if you do go down the wrong road it changes the route rather than demand you turn around like sat navs do.
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