Mr Walker, who is thought to have been known to homeless outreach workers for a number of years, was discovered in an underpass on Pershore Street.
Tributes have been left there today.
Sorry, this content isn’t available on your device.View image on Twitter
The emergency services were called but he was pronounced dead at the scene.
A post-mortem examination is due to be carried out, but there are not thought to be any suspicious circumstances.
A West Midlands Ambulance Service spokeswoman said,
We were called just after 3:30pm to Pershore Street, near Birmingham Master Locksmiths.
Two ambulances, a paramedic and care team were sent to the scene.
On arrival crews found a man in cardiac arrest.
He was sadly confirmed dead at the scene.– A WEST MIDLANDS AMBULANCE SERVICE SPOKESWOMAN
Peter Caine, founder of Helping the Homeless in Birmingham, said Mr Walker’s death had “hit the team hard”.
Mr Caine said:
We’ve known him for around four years – since we started.
It hit the team quite badly.
He was a good guy and a pleasure for the team to meet on our outreach.
He always brought us a smile and will not be forgotten.
We hope he has found peace now.
– PETER CAINE
WATCH: What it’s like to be homeless in BirminghamLast updated Thu 31 Jan 2019