Investopedia defines TBVPS to be:
"Tangible book value per share (TBVPS) is the value of a company’s tangible assets divided by its current outstanding shares." 
I'm pretty sure this is incorrect. or at best misleading!
Canary Wharf, source: https://commons.wikimedia.org/wiki/User:King_of_Hearts
I work as an actuary and underwriter at a global reinsurer in London.