Financial & competing interests disclosure
WB Zimmerman is the technical director and founder of Perlemax. Both authors acknowledge financial support of the TSB CAT programme and Tata Steel. DJ Gilmour would also like to thank the Carbon Trust for financial support. The authors have no other relevant affiliations or financial involvement with any organization or entity with a financial interest in or financial conflict with the subject matter or materials discussed in the manuscript apart from those disclosed.
No writing assistance was utilized in the production of this manuscript.