A note on the recent post about the OPPT, check out all the links, which are not all working properly any more. In particular this one:
https://gov.propertyinfo.com/DC-Washington/
we are all aware that the UK PLC is not where and what it appears to be, it is not unlikely that such links can be disabled.
g-a
I found it on this website: http://www.archive.org (only accessible if you use a VPN)