Pretty good IME...
Search on glow-worm and 24HX and it seems to find it...
Brand: Glow-worm Model name: Flexicom 24hx Model qualifier: Model Identity no.: GC 41-315-61 First Manufactured: 2006 Last Manufactured: Current Product Index Number: 015019 Boiler last updated on database 27/Mar/2012 SAP 2009 annual efficiency: 88.4% SAP winter seasonal efficiency: 89.4% SAP summer seasonal efficiency: 78.7% Comparative hot water efficiency: 57.5% SAP 2005 Seasonal efficiency: 90.3% Efficiency category: SEDBUK Certified SAP equation used: 102 Estimate of Annual Fuel Cost Power: modulating 24.0 - 24.0 kW
Main type: Mounting: Regular Wall Condensing Fuel: Exposure: Flue: GAS Indoor Room-sealed:Fan
Its been like that for a while certainly, but seems to do its job. IIRC SDA did a windows program for accessing the database directly...