He was arrested on suspicion of robbery, attempted robbery, possession of an offensive weapon and allowing to be carried in a stolen vehicle.
He remains under investigation for the offences relating to the robberies.
Police were called to reports of a robbery near to the Roehampton Gate entrance earlier this month.
A man in his 30s was approached by four males travelling on two mopeds who pushed him from his bike, causing minor injuries.
They threatened him with a machete before taking the bike and riding away from the area.
On Monday, the 11th of October, a man in his 30s was knocked from his bike by two males travelling on a moped who then stole his bike in Danebury Avenue.
He was also threatened with a machete.
He suffered minor injuries as a result of the fall from his bike.
At around the same time a man in his 50s was pushed from his bike in Roehampton Lane.
He was approached by two males on a moped.
No injuries were reported.