Mr Harwood, of Havering, was found by police at 10.37pm on Monday and was pronounced dead at the scene.
Four men aged 19, 20, 26 and 29 and a 20-year-old woman were arrested near to the area and remain in custody.
It is believed an argument took place which led to the victim’s death.
A resident, who did not want to be named, said: “I’m angry that this has happened. These things happen all the time and we are the last to hear about it. If we are in danger then we need to know.”
Police are appealing for anyone who saw anything suspicious, in particular a blue Fiat Punto in Courtland Close or activity near the bridge in Chigwell Road (close to the Jet petrol station) from Sunday evening through to Monday night, to come forward.
Anyone with information is asked to contact officers on 020 8345 3865 or if you wish to remain anonymous Crimestoppers on 0800 555 111.
Chelsea Old Town Hall will be the venue for the renowned Desire Fair from 6-8 March 2015. This stunning mixed media jewellery and silversmithing event where visitors can purchase direct from contemporary designer makers selected from the best in the UK is an event not to be missed.