A further 9,100 Wilko employees will be made redundant by early October, administrators have said.

PricewaterhouseCoopers (PwC) failed to reach a deal to save any significant part of the retailer after it went into administration.

“It is anticipated that all stores will be closed by early October, resulting in the redundancies of a further 9,100 employees in those stores,” PwC said.

The company previously announced around 1,600 redundancies at Wilko and confirmed that 52 stores would shut this week after it failed to find a buyer for them.

Read more: Full list of Wilko stores set to close this week

Earlier, Sky News reported 400 branches of the collapsed retailer would close by early October with the “likely” loss of all 12,500 jobs at the chain, according to the GMB.

GMB boss Gary Smith told Sky News’ Politics Hub With Sophy Ridge that Wilko would cost the taxpayer “tens and tens of millions of pounds” – and that a quarter of the Wilko workers won’t get redundancy pay.

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He added the law prioritises creditors over job protection, which has led to this situation.

Mr Smith claimed that due to the lack of proper consultation and the resulting redundancies “the taxpayer is going to pick up the bill” for costs related to redundancy payments, failure to consult, and potential notice pay, amounting to tens of millions of pounds.

Although other companies are still in the running to take over some of Wilko’s shops, GMB said that these were only interested in the property, and any deals would not include workers.

B&M European Value Retail has already agreed to buy 51 Wilko stores which are set to be rebranded. It is unclear if the discount chain will keep on or rehire any of the Wilko staff at the branches.

Zelf Hussain, joint administrator at PwC, said: “Despite the significant and intensive efforts of both ourselves and Putman Investments – the remaining party interested in buying a significant part of the business as a going concern – a transaction could not be progressed due to the inability to reduce central infrastructure costs quickly enough to make a deal commercially viable.

“The dedication shown by all team members during this period has been hugely humbling and we are grateful for the patience and understanding they have shown.

“As with those who have already been given notice of redundancy, we will guide and support those team members impacted over the coming weeks through the redundancy claims process.

“We also continue to collaborate closely with relevant agencies and engage with any potential employers to help facilitate a quick return into new employment for those impacted.

“We continue to work with potential buyers for different parts of the business and are confident of completing transactions in the coming days.”

The following stores will close on Tuesday 12 September:

Acton
Aldershot
Barking
Bishop Auckland
Bletchley FF
Brownhills
Camberley
Cardiff Bay Retail Park
Falmouth
Harpurhey
Irvine
Liverpool Edge Lane
Llandudno
Lowestoft
Morley
Nelson
Port Talbot
Putney
Stafford
Tunbridge Wells
Wakefield
Weston-super-Mare
Westwood Cross
Winsford

The following stores will close on Thursday 14 September:

Ashford
Avonmeads
Banbury
Barrow in Furness
Basildon
Belle Vale
Burnley (Relocation)
Clydebank
Cortonwood
Dagenham
Dewsbury
Eccles
Folkestone
Great Yarmouth
Hammersmith
Huddersfield
Morriston
New Malden
North Shields
Queen Street Cardiff
Rhyl
Southampton-West Quay
St Austell
Stockport
Truro
Uttoxeter
Walsall
Woking

The following stores will close on Tuesday 19 September:

Aberdare
Alfreton
Ashby
Barnstaple
Belper
Beverley
Blackheath
Brigg
Byker
Chepstow
Clifton Nottingham
Colindale
Devizes
Didcot
Earlestown
East Ham
Great Bridge
Greenbridge
Grimsby
Hessle Road – Hull
Jarrow
Kimberley
Leighton Buzzard
Long Eaton
Maesteg
Matlock
Middleton
Newton Abbot
Redcar
Ripley
Seaham
Sherwood
Stamford
Stevenage
Swanley
Tamworth
Wrexham
Wythenshawe

The following stores will close on Thursday 21 September:

Allestree
Andover
Bedford
Beeston
Bicester
Bloxwich
Bolton
Bordon
Bransholme
Bridgend
Bury
Carlton
Clacton on Sea
Cramlington
Crewe
Cwmbran
Cyfarthfa
Denton
Driffield
Droitwich
Edmonton Green
Farnborough
Fort Kinnaird
Fulham
Gateshead
Gorleston
Grays
Greenock
Havant
Hereford
Hillsborough
Holyhead
Newton Aycliffe
Northampton
Orton
Parc Trostre Llanelli
Penge
Peterlee
Pwllheli
Shrewsbury
Slough
Swindon
Tamworth Retail Park
Taunton
Walton on Thames
Wheatley Retail Park
Wigan
Wolverhampton