This video shows a queue for a food bank snaking for a shocking 1.2m (2km) as more than 800 people stand in line.
Volunteers at the London Community Kitchen say the length is not uncommon, with families struggling amid the pandemic.
And some workers believe that the queue in Wembley was the longest in Britain.
Taz Khan, 45, said: “This is just monstrous. We should be expecting 1,000 people this week.
“There is no food project in the country doing this no way is this happening on this scale.
“People are seriously struggling. 800 families are queuing every single Saturday.”
Taz, who has been volunteering for seven years, said the queues began to dramatically increase from around 230 families three months ago.
And he added: “That is every week for us. That’s just the way things are.”
Queues are expected to reach over 1,000 people in length next time the food bank is held on Saturday.
The mile-long line circled past local MP Barry Gardiner’s house last weekend, with a two-minute clip going viral on social media.
The video has emerged as it is revealed some NHS workers are being forced to turn to food banks or take on side jobs as they struggle to get by on their current pay.
Frontline workers have slammed the Government’s proposed pitiful 1% pay rise as “absolutely disgusting” and “insulting”, saying they would take home an extra £3.50 or less per week.
For some that barely covers the cost of getting to and from work in a single day.
NHS workers have said they are prepared to go on strike as this offer is the latest slap in the face after a decade of austerity that saw them fall behind and a coronavirus pandemic in which they continue to risk their lives.
Helen O’Connor, 49, worked as an NHS nurse for 28 years, but quit three years ago because she was struggling to get by on her salary in London.
Now an organiser for the GMB union, she told how some members turn to food banks or look for extra work because their NHS pay isn’t enough to support their families.
Helen said: “One of the reasons I left was the pay was starting to fall through the floor thanks to austerity.
“It was just starting to get ridiculous and I started to struggle to pay my bills and I couldn’t have a life The pay is just an insult, really.
“The reality is when your pay is held down you’re experiencing a cut and you do end up struggling.”