Stephen Mulhern was rushed to hospital after he collapsed while eating out at a Pizza Express following an operation earlier in the day.
An ambulance was called for the star, who is mourning the death of his father, after staff became concerned for him at around 8pm on Wednesday, The Sun reports.
As a precaution, the 47-year-old was checked over by paramedics as he was taken from Sunningdale, Berks, to nearby Frimley Park hospital.
A spokesperson for Stephen told OK! "Stephen has had an incredibly tough time over the past few weeks. His beloved father recently passed away which has hit him hard and has been understandably very stressful. "In addition he had a procedure which took place yesterday (Wednesday).
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