The mother of a missing teenager has described him as "her everything" and claims he was "struggling to cope" with shielding due to a chronic health condition.
Mr Okorogheye’s mother Evidence Joel has revealed he suffers from sickle cell disease and has been shielding since last March because of the coronavirus pandemic.
Before his disappearance, he would only leave the house for regular hospital appointments.
"All he said to me was ‘mummy, I’m going to see my friend’. I trusted him, I had no doubt or no reason to ask him further questions," Ms Joel told Sky News.
In a desperate plea for him to come home, she said through tears: "It’s my baby, it’s my treasure.
"He’s my oxygen, he’s my crown. He’s everything to me, he’s the reason why I live."
Ms Joel claims he told her he was "struggling to cope" before he disappeared, sparking fears he could be suffering with depression as a result of months spent locked in his room shielding.
He is studying IT at Oxford Brookes University and was finding remote learning difficult, she added.
She and Richard’s father Newton Okorogheye have criticised the police’s handling of the case, claiming they were not "taken seriously" following his disappearance.
Met Police say they are becoming "increasingly concerned" for Mr Okorogheye’s welfare.
Chief Inspector Clare McCarthy, of the Met’s central west command unit, said: "Our officers have been working tirelessly to locate Richard, using all investigative opportunities and data enquiries, speaking with witnesses and trawling CCTV.
"We are following every lead possible and are appealing for the public to help us in our work. If you may have seen Richard, please contact police.
"If Richard is safe and well, we ask him to contact us as a matter of urgency so that we can put his family’s minds at ease."
The teenager is known to frequent Hammersmith, Fulham and Westminster, she added.
Anyone with any information should call police on 101 quoting 21MIS008134. Information can also be given via the charity Missing People.