Seems like a rather risky business to me personally, with no profits for the last 7 years of operations (although their accounts go as far as 2010, they only started real operations in 2012).
Whilst the article is stating the following:
In the year ended 31 December 2017, Funding Circle posted revenues of £94.5 million, compared to £50.9 million in the previous year. In its 2016 full year results, published September last year, the company narrowed its losses to £35.7m, down from £36.9m in the in the previous year
The Companies House filings (page 11 of the actual PDF) significantly contradict the AltFi’s information - revenue in 2016 being £39m (not £50m) and operating losses being £53m (not £37m). Even if they meant net loss, the figures would still have not added up.
Interestingly, Companies House do not have their year 2017 yet (usually posted in October year after, i.e. we could expect 2017 accounts in October 2018), and, given discrepancies AltFi have already shown, I would be reluctant to take revenue growth and reduced losses for 2017 for granted and rather wait for the official accounts to be released.