In July, Denise confirmed she and Lee had split following a four-year marriage, however she added that they remain "best friends".
The couple have a three-year-old daughter together called Betsy and Denise also said that their little girl remained their "number one priority".
Earlier this month, Lee sponsored Denise for her charity Great Wall Of China trek, which she completed on Sunday.
Huge congrats to @leemeadofficial on your new series regular role in BBC's 'Casualty'. We are very proud of you. Den & Betsy x— Denise Van Outen (@denise_vanouten) September 19, 2013
Today (19 September), Denise took to Twitter again after Lee landed a permenant role in long-running TV drama series Casualty.
"Huge congrats to @leemeadofficial on your new series regular role in BBC's Casualty. We are very proud of you. Den & Betsy x" she said.