An attempted burglary occurred in the early hours of the morning on April 2, at an address on The Heights, Harrow.
The suspects were seen running away down the road and getting into a white van with Romanian plates.
The attempted theft was believed to be for building materials.
If anyone saw or heard anything suspicious during that time, they are encouraged to report it to the police via OWL or by calling the non-emergency number 101 and quoting crime reference 2004893/23.
Information can also be provided anonymously to Crime Stoppers on Freephone 0800 555 111.