Tesco's like-for-like sales fell by 2.4% over the Christmas period, the company announced, blaming a "weaker grocery market".
Rival supermarket Sainsbury's revealed its "best Christmas ever" on Wednesday but warned on consumer spending going forward.
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No explanation was given for their sudden departure.
Bryan Bagby will co-write the script with him.
The sacking occurred on the same day the man was being buried in St Lucia.