The new store on Ashfield Precinct use to be a fruit and veg shop before being transformed into the fast food restaurant.
Tesh Patel, business development agent for Subway who supports franchises, said: "It is great to see how we have been welcomed and the positive comments we have had."
Nestled between Boots and the library the store created 20 new jobs.
Ama Mandeir, franchise owner, who also owns Subways in Sutton and Mansfield, said he is also looking to open stores in other areas including Ollerton and Hucknall
He said: "It is a new design called 'Fresh Forward' it only launched six months ago. This store is one of the first."
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