Last month there were 68 investments worth $1.2bn, compared with 97 investments worth $1.9bn in January last year and 61 worth $996m in December.

The first month of 2013 featured some eye-catching deals, as stock market valuations boomed during the month, even as wider dealflow failed to stand out.SurveyMonkey, a US-based provider of online questionnaires, sealed the largest deal of the month, with early investors selling $444m at a valuation of $1.35bn to a consortium including search engine provider Google.

In addition it was reported that social messaging service Twitter was brokering a deal with mutual fund manager BlackRock to buy up to $80m…