"They're mortified. The management have identified them and spoken to both. Now they fear for their jobs - and what their families will think of them," the Sun quoted an employee as saying.
"They never realised pictures were being taken. No one can believe that they were so brazen. They're both single - so at least they haven't got any explaining to do to partners," the worker added.
The lovers romped in the early hours of October 24 after other staff and customers had left.
"We can confirm that two employees have been suspended following inappropriate behaviour," a Pizza Express spokesman stated. (ANI)