Impression Technologies has raised $3.8m in a series B round co-led by Touchstone Innovations and Mercia Technologies.

Impression Technologies, a UK-based aluminium forming technology spinout of Imperial College London, has raised £3m ($3.8m) in a series B round co-led by commercialisation firm Touchstone Innovations, itself spun out of Imperial.

The round was co-led by commercialisation firm Mercia Technologies, with both backers putting in £1.5m.

Founded in 2012, Impression Technologies uses technology dubbed hot formed quench, which enables manufacturers to form deep drawn complex shapees from both high and ultra-high strength aluminium.

The technology enables a cost-effective manufacturing…