This is a link to the dedicated customer portal HEAT for ONI customers. It needs a user name and password in order to log-in.

Contact Us

Head Office

ONI plc
24 Crawley Green Road
Luton
Bedfordshire
LU2 0QX

Telephone: 01582 429999
Fax 01582 429990

Telephone: 01582 429999

ONI plc
City Business Centre,
2 London Wall Buildings,
London,
EC2M 5UU

Telephone: 01582 429999
Fax: 01582 429990

Telephone: 01582 420999

Should you require any further information on ONI plc and the services that we provide please do not hesitate to contact us.

If you are planning to visit ONI and have any special needs or requirements, please make your host or hostess aware of them before your visit.

ONI plc
24 Crawley Green Road
Luton
Bedfordshire
LU2 0QX

Telephone: 01582 429999

Email:

Telephone: 01582 420999

Email: