Barclays
esure
ICON Communication Centres
Marks & Spencer
Panasonic Europe
Sitel Group – Innso
Swinton Insurance
Sberbank

Paddy Power Betfair
Shop Direct, Webhelp and Go Beyond
TalkTalk
Textlocal
Unbabel and Concentrix
Teleperformance Portugal
Nationwide Building Society
Vizolution and RBS

Edwardian Hotels
Mosenergosbyt
Orange Poland
Vodafone Germany
Sitel Group – TSC
Shop Direct
Sberbank
Teleperformance UK

HSBC
OTP Bank
Sberbank
Thomas Cook
Emovis
Three UK and Tech Mahindra Business Services
Shop Direct
Co-op

esure
Three and Tech Mahindra Business Services
Paddy Power Betfair
Sberbank
Severn Trent
Teleperformance UK
Vodafone Germany
Perkbox

Sberbank
Nationwide Building Society
Opus Energy
GoCardless
Domestic & General
Ageas
CPM International
Co-op

TalkTalk
Holidaycottages.co.uk
Sberbank
Kiwi.com and Genesys
Experian
Aegon
Virgin Media Business
Teleperformance Portugal

Aegon
HGS
Nationwide Building Society
OVO Energy
Shop Direct and Webhelp
Sitel Group and Nectar
Teleperformance Russia
Ventrica

Marm Assistance and Ford
Assurant and Centax
Conectart and Samsung
Sitel Group and The Bodyshop
WPG Racing Solutions and Formula 1
Expedia Group and Sykes Brasov
Sitel Group and Beko
First Data and NewDay

Atos and Aegon
Teleperformance Greece and Canon
Ventrica and DHL
Webhelp and Sky
Sykes Global and Sony PlayStation
Ascensos and Aldi
CPM International and Agilent
Firstsource and Sky

AnyTech365
Assurant
Microsoft
Sberbank
Shop Direct
Three UK and Tech Mahindra Business Services
Pindrop and Bank of Ireland

Abel & Cole
Aqualisa
Aegon
GoCardless
60K and Matalan
Close Brothers
Atom Bank
Shop Direct

OVO Energy
Sberbank
Vestel
Three UK and Tech Mahindra Business Services
Barclays
National Grid Metering
60K and Zumba
60K and Wizz Air

Barclays
EE
Halfords
PKO Bank Polski
The Automobile Association
Three UK and Tech Mahindra Business Services
Co-op
Vodafone

CPM International
Microsoft
One Freelance
PKO Bank Polski
Sberbank
Vodafone UK

Assurant
Burberry
CPM International
Emovis
Estee Lauder Companies
Nationwide Building Society
NewDay
Team Knowhow

Baskent Elektrik
Business Stream
GES
GoCardless
Redgate
Samsung & Teleperformance Netherlands
Transcom
NewDay

Barclays
BNP Paribas Fortis
HGS
Marks and Spencer
Sberbank
Shop Direct and Webhelp
Sky
Severn Trent

1&1 IONOS
HGS
NTT
Ralph Lauren and Teleperformance UK
RSA Motability
Textlocal

BGL Group
Business Stream
Redgate
Vodafone Stoke-on-Trent
Vodafone Manchester
Barclays

Assurant
ASFiNAG
Equiniti and First Impression Training
John Lewis
Punch Pubs & Co.
Sberbank
Team Knowhow
AllClear Travel Insurance

BGL Group
Census Group
Co-op
HSBC
NewDay
TalkTalk
Teleperformance Greece
ICON Communication Centres

Aegon and Atos
AllClear Travel Insurance
Ascensos
Emovis
Sberbank
Vodafone

Atom Bank
Gousto
National Grid Metering
Emovis Leeds
Sitel Group Coventry
Microsoft Dublin
Expedia Group
Ventrica

BT Stoke and Dundee
NHS Business Services Authority
TTEC
Nationwide Building Society
EE
Sberbank
Teleperformance Portugal
OVO Energy

ASOS and Teleperformance Russia
Samsung
Sitel Group Glasgow
Teledirect Europe
Three UK and Tech Mahindra Business Services
WPG Racing Solutions

AnyTech365
Burberry
DDC Outsourcing Solutions
Expedia Group
Paddy Power Betfair
ServiceSource
Sitel Group Sofia
Teleperformance Greece

Conectart
Eishtec
Emovis
Marm Assistance
Sykes Global
TTEC
Webhelp
Telecontact

Atom Bank
Gousto
National Grid Metering
Burberry
WPG Racing Solutions
Lloyds Bank International

BT Newcastle
BT Warrington
Virgin Media Business
Emovis
Virgin Holidays
Co-op
Aegon and Atos
Defra

AnyTech365
NewDay
Expedia Group
HSBC
EE Merthyr
Sykes Global
BGL Group
Sberbank

ServiceSource
Webhelp and easyJet
TTEC
Sitel Group
Teleperformance
Sykes Global