Nasstar has a number of accreditations and certifications:

Microsoft Gold partner; Citrix Cloud Service Provider (CSP).
UK’s first Citrix CSP, founding the programme in 2008.
European Citrix Service Provider of the Year 2012 – 2013
MSPMentors Global top 100 service providers

Nasstar has achieved ISO 27001 accreditation. ISO 27001:2005 is the internationally recognised standard which encompasses both the logical and physical aspects of information security. Nasstar is externally audited by ISOQAR to retain this accreditation on an annual basis.