A seven-year-old who hopes to one day join a Norfolk lifeboat crew raised almost £3,000 for the charity that saves lives at sea. Johnathon Jarvis walked the 40 miles from his home at Upwell to Hunstanton’s lifeboat station with his dad Lee and mum Kayleigh. He completed his four-day trek on June 2, after the family braved heavy rain and strong winds along the way. On Sunday, June 30, the Hunstanton crew was on hand to welcome Johnathon back as he presented a cheque for £2,922.02 to the station. Water safety lead Kate Craven presented the youngster with a special framed certificate in recogniti…