The Comet electrical store in Wrexham could close within a fortnight unless a buyer is found. The store is one of 41 across the UK under immediate threat. 12 people are currently employed there but the administrators Deloitte say they hope to redeploy anyone affected.
Other Comet stores around Wales are expected to continue trading over the Christmas period.
More top news
The world record attempt will raise money for the foundation set up in memory of the Olympic gold medallist, who died in May 2013.
In today's Newsweek, Carl talks about what the 'No' vote in the Scottish Referendum could mean for Wales and the impact of legal highs.
England manager talent spotting at Swansea City v Southampton at the Liberty Stadium