I think people are just confused by your use of the word "burn". What is your fully loaded average cost per employee (total spend divided by headcount of 30 people)?
About £2.8k - £3.2k/month - it has admittedly increased over the last six months, as we've had a few expensive hires, and have taken on more space in preparation for more growth.
As per elsewhere, we admittedly have abnormally low rent costs, and virtually no other costs outside of rent, people, power, and hardware.