One thing possibly of interest is a message on the online portal, which suggests that the PCN will increase to £240 on the 26th Feb.
However the letter says that it will increase to £160 14 days after the letter is served, and then to £240 after 28 days. If we take the letter to have been served on 9th Feb, that means £160 on 23rd Feb, and £240 on 9th Mar, so I'm not sure where the portal's date of 26th Feb comes from?


