Around 1,000 jobs are understood to be at risk after upmarket sandwich and coffee chain Pret a Manger announced plans to close 30 sites.
The firm said it is taking the action after its footfall was hammered by the coronavirus lockdown.
The company said recent sales have plummeted by 74% compared with the same period last year.
Sales and footfall have been hit hard by a heavy reduction in the number of people travelling into city centres for office work, with more people working from home due to the pandemic.
Pret said it will also reduce the number of staff working across its remaining UK stores to reflect the slump in demand.
It is understood around 1,000 jobs are at risk as part of the restructuring plan.
The company said it has faced “significant operating losses” following the outbreak, despite having reopened over 300 of its sites.
Pret will soon start consultations with staff as it pushes forward with plans to shut these 30 sites in the second half of the year.
Its restructuring plan will see it launch a sale process for the lease of Pret’s main support office near London Victoria station.
Discussions are also ongoing with landlords across its estate to develop a more “sustainable” model, after external advisers were hired.
A list of affected stores has yet to be released, but last week it confirmed Newcastle’s Grainger Street and the Gateshead Metrocentre sites would not be reopening.
Chief executive Pano Christou said: “It’s a sad day for the whole Pret family, and I’m devastated that we will be losing so many employees.
“These decisions are not a reflection on anyone’s work or commitment, but we must make these changes to succeed in the new retail environment.
“Our goal now is to bring Pret to more people, through different channels and in new ways, so that we can continue to provide great jobs and opportunities to our remaining employees.”
The shops which will close are:
- St George University Kiosk
- 421 Strand
- Heathrow Terminal 3 landside
- 109 Fleet St
- Strutton Ground
- Centre Point
- Warwick Way
- Byward Street
- Southwark The Cut
- 41 Piccadilly
- Wood Street, Barbican
- 59 High St Worcester
- Albert St Nottingham
- Lion Yard Cambridge
- Fargate Sheffield
- High St Uxbridge
- Broad St Reading
- High Wycombe
- Metrocentre Gateshead
- Queensgate Centre Peterborough
- Shandwick Place Edinburgh
- East Street Chichester
- Glasgow Fort Shopping Centre
- Gallowtree Gate Leicester
- Capitol Centre Cardiff
- Grainger Street Newcastle
- Chapelfield Norwich