I'm not surprised this business failed. It was better off in the town centre location, but thats still hard to get to unless you pay for parking (and car park immediately opposite got turned into construction zone).
Moving it to the sportsball ground makes it even harder to get to, on top of which although I like #PieAndMash I don't want to be the only brown person in the area, especially as this traditional British dish can attract #gammons who avoid "foreign" food..
I think there's still a pie and mash shop in the shared multicultural Tower Street Food Court, which I might visit next time I am in town