tldstock.com- strong name for domain wed site
lngstock.com- Lng is Liquefied natural gas
cutcards.com- expired name which i thought it would be good for a cards company
neatnoise.com- expired name and i thinks its cool
Ltps.co.uk - ltps = Low-temperature polycrystalline silicon
3800.co.uk the rest i thought nice and they turn good search results
rimg.co.uk
flees.co.uk
peircing.co.uk
I would try and sell neatnoise.com. Try actively marketing it to sound effects companies or sound people, or start an auction (but tell relevant people about your auction first).
You can easily sell tldstocks.com for low xxx to mid xxx.
All other .coms range between mid xx to low xxx.
And i don't see any future for your .co.uk domains.