Nuffield Health announced the closure this week, warning members that classes and activities would be affected.
The fitness and wellbeing gym in Locking Road has remained shut into today (Thursday, September 17), with all classes cancelled.
In a Facebook post, Nuffield Health said: “The club is currently closed due to a major power outage.
“We’re sorry for the inconvenience and are working to get things back up and running as soon as possible.
“We’ll update you as soon as we know more. Thank you for your patience and understanding.”
In a further update, the gym confirmed that the closure would continue on Thursday due to the ongoing outage.
It said: “The club will remain closed tomorrow, Thursday 17th September, due to the ongoing power outage.
“Please be aware that all classes tomorrow have now been cancelled, including our children’s swimming lessons from 4–6pm.
“We’re sorry that we’re unable to provide a further update at this time, but we will let you know as soon as we have more information.
“If you have any questions, please contact our team via email and we’ll do our best to get back to you as soon as possible.”
The closure means members are unable to access the gym while work continues to resolve the issue.
No reopening date has yet been announced, with Nuffield Health saying it will provide further updates as soon as more information becomes available.