April 9 (Reuters) - ⁠Last year's Grand National ⁠winner Nick Rockett will miss ‌this weekend's defence of his crown at Aintree after being declared a ​non-runner on Thursday, having ⁠been reported to ⁠be coughing.

In 2025, Rockett, a ⁠33-1 shot ‌ridden by Patrick Mullins, won the ⁠Grand National steeplechase at Aintree in ​a ‌top three sweep for horses ⁠trained by ​the Irish amateur jockey's father Willie.