The couple were thought to have tied the knot yesterday in front of Corrie's Catherine Tyldesley and Brooke Vincent, and Jamie's former Hollyoaks co-stars Kieron Richardson, Rachel Shenton and Nico Mirallegro.
According to Twitter, Michelle Keegan and Helen Flanagan were also said to be attending the glitzy wedding at Nunsmere Hall Hotel.
On Friday, Kym hinted that she would be a married lady by the time the weekend was out, tweeting: "Work finished now for a few weeks!
"One hell of a weekend ahead!!! Woohoooooooo! X"
In July, Kym jetted out to Spain for her hen weekend alongside co-star Beverley Callard and, last month, Jamie was pictured on his stag do while handcuffed to dwarf Josh Bennett - as you do!
But although the couple have been dating since 2008, and engaged since 2009, their relationship hasn't always been plain sailing.
Earlier this year, Kym admitted she had struggled when Jamie flew to Los Angeles for several months in an attempt to launch a Hollywood career.
One month later, Jamie denied tabloid reports that he had "drunkenly kissed" carer Katie Moores on a night out in Leeds.
Reveal have contacted Kym's rep for a comment on the wedding rumours.
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Read more: Kym Marsh lets her hair down during Marbella hen party
Read more: Jamie Lomas handcuffed to dwarf Josh Bennett on stag do!