NSW police honour slain Bryson Anderson

Slain NSW police officer Bryson Anderson has been honoured by family, friends and colleagues during a poignant ceremony of remembrance in central Sydney.

Hundreds of police officers gathered at the Domain on Saturday morning to pay their respects to their fallen colleague ahead of the force's annual charity motorcycle ride to Canberra.

The 45-year-old father of three was fatally knifed last year while trying to calm a neighbourhood dispute over a bird cage in Oakville, in Sydney's northwest.

Det Insp Anderson's widow, parents, children and brothers comforted each other as tributes were read out, and a wreath was placed at the foot of the NSW Police Wall of Remembrance.

Police Commissioner Andrew Scipione said it was important to show the Anderson family that they were supported by the police force during a "sad" and "confronting" day.

"To go down and see the name of your husband, your best mate, your friend, the father of your children etched on the wall ...it brings it all home again," Mr Scipione told reporters.

"We should never forget that this man was stolen from us, and this is one way that we can make sure that that is the case - we will never forget."

Det Insp Anderson's widow, Donna Anderson, appeared emotional as she handed Mr Scipione a handwritten tribute to her husband that he will carry to Canberra on his motorcycle in a hollow, ceremonial police baton.

Up to 1500 riders are taking part in the Wall to Wall: Ride for Remembrance, which commemorates fallen Australian police and raises funds in support of their families.

Mr Scipione said the ride proved that "motorcycling is not exclusively the domain of organised criminals".

"It's something we can all enjoy. The freedom, the chance to join with friends, to enjoy the road is something they (bikies) don't necessarily have a mortgage on."

The ride will conclude in Canberra on Saturday afternoon, with a ceremony due to be held at the National Police Memorial at 3pm.