• +44 (0) 1376 515 702
close message
We've rebranded! As of July 2022 GB Underwriting rebranded to MX Commercial.

GB Online is now MXC Online. Use your details from gb-online.biz to login on the right.

Welcome to MXC Online


MXC Online just keeps getting better. In addition to our market leading Excess of Loss platform, You can now obtain and bind Unoccupied Property & Property Owners quotations. We hope you find these new products useful.

Existing USERS

Users already registered can login to MXC Online (via the right hand column) using their existing login details. If you have forgotten your login details please follow the 'Forgotten Password' link on the right hand side of the page. If you have any questions or problems please call 01376 515702

New Users

If you are a new broker and wish to register click the Agency Application link on the right hand side of this page to register for an agency. If you already have an agency with MX Commercial but you are not set up for MXC Online and would like login details, or have forgotten your existing details please call 01376 515702

Excess Public Liability (XSPL)

New lower minimum premiums, an improved policy wording and a Per Capita rating option are some of the enhancements which have been added to this already market leading quote and buy platform.

Unoccupied Property

Minimum premiums from just £250 + IPT. Short period (3, 6 or 9 month) policies available. Online documents and renewal procedure.

Property Owners

Up to £5m any one location with a £250 minimum excess. Online documents and renewal procedure.

Business Essentials E-trade

Now available via the 'Liability & Contractors All Risk' option within the New Quote Menu (when logged in).