London Buses route 674 is a Transport for London contracted bus route in London, England. Running between Harold Hill and Romford, it is operated by Blue Triangle.
On 15 October 2005, the route passed to Stagecoach East London from their Romford (NS) garage and converted to low floor operation using an Alexander ALX400 bodied Dennis Trident.
On 16 October 2010, the route passed to Blue Triangle operating from their Rainham (BE) garage using a Plaxton President bodied Volvo B7TL.
In 2014, the Plaxton President bodied Volvo B7TL was replaced by a Optare Olympus bodied Scania N230UD.
On 17 October 2015, the route was retained by Blue Triangle.
On 2 July 2016, the allocation was transferred to River Road (RR) garage.
Route 674 operates via these primary locations:
- Harold Hill Dagnam Park Square
- Harold Hill
- Gallows Corner
- Gidea Park Station
- Romford Station