Strictly stars Nadiya Bychkova and Dan Walker headed out on a special date night in Sheffield and they were in great company as the BBC presenter's family joined them.MORE: Strictly's Dan Walker pays emotional tribute to wifeThe group headed to Uncle Sams Diner in Sheffield and the 44-year-old couldn't help but share a picture from the night with his Instagram followers.WATCH: Strictly's Dan Walker reveals shock friendship with major US star"We took @nadiyabychkova out to @unclesamsdiner with