The 31-year-old made 14 league appearances for the Hammers before his lack of form saw him only start a further five games from December until the end of the campaign. Many were calling for him to travel to Russian Federation though, as he has 75 caps for the Three Lions.
Hart was England's No.1 in Brazil four years ago but won't be travelling to Russian Federation this summer.
England face Nigeria at Wembley Stadium on June 2 in a pre-tournament friendly, before playing Costa Rica at Elland Road on June 7.
Child Found, Mother Arrested After Tulsa Police Issue Amber Alert
The search ended Tuesday afternoon, when Ahmad and her 7-year-old daughter were found in a parking lot in Tulsa. MacKenzie said Monday evening that there was no known history of child abuse or domestic violence.
"We had the best defensive record in Europe in qualifying". We know these players and we believe that, in the long term, some of them can be world class players. "I would play lots of these talented young players".
"For any coach, it is the most hard conversation because any time you pick a team and leave a player out. having been a player, I know how upsetting that is", he said.
Swansea's Alfie Mawson will also not be included in Southgate's squad for the World Cup after he underwent successful knee surgery on Monday - keeping him out for between six weeks and two months.