Mr Groves’ father said he believed a potential change to his son’s employment and support allowance (ESA) benefit “must have” weighed on Mr Groves.
He said: “He has obviously had it in his mind. They basically told him that his assessment was coming up again.
“He knew it probably would be the end of his sickness and disability and he would go back on to [jobseeker’s allowance].
“He said he would not be able to manage on that wage a week. It is all part and parcel of it.”