Two men have been arrested in Ealing on suspicion of firearms offences.
Armed officers stopped a vehicle in Hanwell earlier today and arrested a 23-year-old man. A firearm, believed to be an imitation, was recovered from the vehicle.
A short time later, a warrant was executed at an address in Southall. A 26-year-old man was arrested. A CS gas canister and a further firearm, also believed to be an imitation, were recovered from the address.
Both are now in custody.