Full-year profits of £4.6m show an increase of 67% on the previous year and the group has also expanded its workforce from 419 staff to 625.
Within the group, credit reference agency Callcredit and marketing services provider Broadsystem performed particularly well.
Callcredit's revenues increased by 46% year on year thanks to contract wins for high street lenders and the success of its collections and account management products. The company also saw online credit searches treble during the same period.
In its first year under ownership of CIG, Broadsystem has turned round a previous operating loss to show a profitable position in 2008, with revenues growing by 8%.
CIG acquired Broadsystem from News International in January last year to strengthen its position in the provision of data and database services and credit referencing.
Caroline Worboys, managing director of Callcredit Marketing Solutions, said: "Although the last year has hit the marketing industry hard, Broadsystem and EuroDirect have together grown stronger throughout 2008.
"As Callcredit Marketing Solutions we have been able to deliver an unrivalled capability to marketers -- turning data, insight and customer interaction resources into customer value, which marketers have seen measurably increase their performance."
Mike Green, CEO of Callcredit Information Group, said: "In what was a very difficult year in terms of the economy, CIG made good positive strides in 2008 and continues to grow, increase market share and improve profit margins.
"Growing in difficult times confirms to us that we're contributing value to our clients and with new product innovations already in place for 2009 we expect to continue to deliver a solid financial performance and exceed our long term growth objectives."
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