Unsightly graffiti in a Brentford park will be covered up thanks to a huge donation of paint.
Connect Plus Services handed over 100l of paint, plus rollers, to the Friends of Boston Manor.
The paint will be used to hide graffiti emblazoned on the supporting pillars of the M4 flyover, which passes over Boston Manor Park.
It is already being put to use by ex-offenders as part of the Community Payback scheme, which helps them atone for their crimes.
CPS, which maintains motorways including the M4 for the Highways Agency, has been supporting the initiative in the park since 2010.
Linda Massey, of the Friends of Boston Manor, said: "The Friends have been active within Boston Manor Park for over 10 years and together with the grounds maintenance team have raised the standard of the park.
"Thanks to CPS's generosity, we are continuing to maintain the park and its amenities for those that use it in our local community."
Brian Johns, services managing director at CPS, said: "CPS operates and maintains the whole M25 (and surrounding roads) and we therefore come into contact with a lot of communities.
"It is rewarding when we are able to support community-led initiatives and we are delighted to continue our support of Friends of Boston Manor through this donation."
Broadcaster BSkyB recently applied to create a temporary car park under the flyover in the park, to be used by contractors while work takes place at its HQ.
The park's friends group has criticised the plans, arguing that it doesn't want the site to become a "glorified car park".