Imogen Heap

At 2:02 in the Making Of Lifeline (Heapsong1) video, you can see a Samson G-Track USB Condenser Microphone in Imogen's studio The Hideaway.

"Imogen's workhorse plug-ins at the mixing stage were the Focusrite D2 EQ and D3 compressor, along with the Waves Renaissance Compressor." (From Imogen Heap's interview with Sound On Sound magazine.)

Imogen says: "It's going through a massive long reverb in TrueVerb, and then volume-ridden and processed and reversed... and probably going through TrueVerb again! I love how you can have this little tiny sound that turns into a monster after a couple of hours of playing."

On Twitter, Imogen says:

Had 'em for 5 years without a hitch. Love them! MPS2510P M&K Active monitors + sub.

Very briefly at 0:48 in the video, you can see a UAD-2 Satellite on Imogen's desk while she's playing her keyboard.

At 0:48 in the Box of Tricks video, Imogen is using a Native Instruments Komplete Kontrol S61. Zooming in to the HD version shows the S61 model number in the top left of screen.

In this photo of Imogen's guitar chain from Sound On Sound magazine, we can see a Korg DTR1000 guitar tuner below the red Line 6 Pod XT Pro.

Mentioned in the "Gear Used For Recorded Song" section of the credits for Imogen Heap's song Magic Me.

Imogen Heap is pictured in the attached proof holding the Roland AX-1 (which is different from the Ax-Synth). The strap is also a Roland strap, and the color, and the button layout along the top of the keys is signature to the AX-1

"I saw the [DigiTech Vocalist Workstation] on a shelf and just plugged it into my little 4-track MiniDisc with my mic and my keyboard and pressed Record."
The rest of the article talks about using it in the song "Hide and Seek".

In the YouTube series hosted by Tape Notes Podcast titled "The Edge Of Chaos - Imogen Heap's Exploration of Noise with FLESHLICKER," Imogen Heap discusses her musical process and mentions her use of various gear, including the Soma Laboratory LYRA-8, as listed in the episode description.