A new early stage investment firm is de-cloaking in London today. Three prominent Angel investors on the tech scene in London – Stefan Glaenzer, Eileen Burbidge and Robert Dighero – have been operating out of their White Bear Yard base in Clerkenwell for just under a year. Rumours circulated that they were looking to raise a real fund to continue their work, and now the news is about to break (ok, now it’s broken).

Video advertising company Adap.tv has raised $20 million in funding led by Bessemer Venture Partners with Gemini Israel Funds, Redpoint Ventures and Spark Capital also participating in the round. This brings Adap.tv’s total funding to $43 million. Adapt.tv’s ad platform allows advertisers to buy and manage online video ad inventory from a single interface and enables publishers to monetize their online video content.

Last week, photo sharing app Color launched in the iOS and Android stores after announcing it had received $41 million in funding.

The story of SimpleGeo is a familiar one: two founders —  Matt Galligan and Joe Stump — set off to create location-based games, only to find that the tools they wanted to use to build their apps didn’t exist yet. So they switched gears and decided to build what they wished they had: a suite of tools optimized for the creation of location-based services (which was probably a good call given the explosion of location-aware mobile devices). The startup launched almost exactly one year ago, and now offers products including ‘Places’ (a database of POIs) and ‘Context’, which lets developers query for data relevant to a given location, like the local weather

Jack Dorsey isn’t the only one announcing a new role at Twitte r … Twitter HR Manager Cheryl Palarca tweeted that the company has hired another batch of people today, “in honor of Lady Gaga’s birthday.” For those of you that got excited (myself included), that Gaga thing is a joke, even though the popstar did recently visit the company and today is indeed her 25th birthday. The actual number of new hires is also 24 not 25,  which bumps the total Twitter staff up to 450 people, Twitter PR rep Carolyn Penner tells me

This past weekend, we broke the news that iOS 5 , the latest version of Apple’s mobile operating system, was likely being released in the fall. This would break the tradition of a summer release.

Today’s return of Twitter inventor Jack Dorsey to the company he created to once again head up its product efforts raises the question of what will co-founder Evan Williams be doing now. When he handed over the CEO reigns to Dick Costolo last October, the company said he was going to focus more on the product side of things. Dorsey is now the head of product and the two co-founders have a contentious relationship.

Newsy , a multisource video news service that analyzes the world’s news coverage, announced today that it has closed a $1.5 million series B round led by a St. Louis-based private equity firm. The second round adds to the $2.75 million in funding Newsy has already raised, bringing total investment to $4.25 million

Amazon has just announced that Kindle users who subscribe to The New York Times on their device will receiving access to news site for free.

Meme catalogue website Know Your Meme has been swallowed by Ben Huh’s The Cheezburger Network this morning in a seven figure deal, Tubefilter’s Marc Hustvedt reports.