At Cannon Hall Farm, Helen Skelton and Jules Hudson witness dramatic arrivals as farmers Rob and Dave Nicholson welcome some `new kids' on the block. JB Gill visits the final contender in the Young Farmer of the Year contest, 28-year-old Adam Walton, who is following in his late father's footsteps to helm the family pig farm, while in north Wales, teenage champion shepherdess Erin McNaught is hand...