They display in the post as &#8220 and &#8221

Strangely, when I use ALT and the number pad for 8220 and 8221 I get this code, ∟ and this ↔ respectively, so it is difficult for me to check what characters they are.

How did you include those? If from the ALT number pad combination, try the Character map in Start > All Programs > Accessories > System.