Till worked for relatively low-key architectural practices, Alex Gordon Partnership and Peter Currie Architects, before joining his partner, Sarah Wigglesworth, to design and build their well known house and office, 9 Stock Orchard Street, which was featured on the first series of the TV Programme Grand Designs; subsequently the presenter Kevin McCloud named the project as one of his favourite projects.
Unlike the established canon of exemplary houses, this house/office is a deep, dense and determined essay on the question: what is architecture today?"
He was appointed as Head of Central Saint Martins and Pro Vice-Chancellor of the University of the Arts London in 2012, and held that position until September 2022.
Stephen Moss writes in the Guardian that, "the appeal of Till's thinking is that he starts with people rather than structures, and asks us not to venerate buildings but to occupy them.
"[8] Other books include Flexible Housing (written with Tatjana Schneider)[9] and Spatial Agency (written with Nishat Awan and Tatjana Schneider)[10] All three of these books were awarded the RIBA President's Award for Outstanding University-based research, making Till the only person to have received this international honour three times.
[13] From 2021 he led, again with Tatjana Schneider, a research project funded by AHRC and DFG entitled 'Architecture after Architecture: spatial practice in the face of the climate emergency.
[14] For this project, he is part of the research collective MOULD It has been commented that his privileged Eton and Cambridge background is at odds with his later left-wing political views.