I think Summly was really started by SRI or at least co-founded by them and then the exec team was brought on to run it. They created the tech, put Nick as the CEO/face of the company as he had previously built/outsourced Trimit & tried to build a consumer startup on it.
There seems to be very little distinction between SRI and Summly.
I think Trimmit originally received investment from a hong Kong vc. Then seeked out sri to improve the product at which point they got deeply involved.
There seems to be very little distinction between SRI and Summly.