Xero
The contact details for this provider are:
5th Floor
100 Avebury Boulevard
Milton Keynes
MK9 1FH

https://central.xero.com/s/article/Get-help-from-Xero-Support

https://www.xero.com/id/legal/privacy/

 

Quickbooks Online
The contact details for this provider are:
5th Floor
Cardinal Place
80 Victoria Street
London
SW1E 5JL

https://quickbooks.intuit.com/hk/learn-and-support/

https://quickbooks.intuit.com/hk/privacy/

 

The Sage Group plc
The contact details for this provider are:
C23 5 & 6 Cobalt Park Way
Cobalt Business Park
Newcastle-Upon-Tyne
Tyne & Wear
NE28 9EJ

Privacy and Cookies | Sage UK

 

Dext
The contact details for this provider are:
Unit 1.1
Techspace Shoreditch South
32-38 Scrutton Street
London
EC2A 4RQ

https://dext.com/uk/security