You can apply to have your UK insurance record for years before 1948 removed from your pension record if this will make you eligible for a higher German state pension.
In the early 1990s Germany changed their pension laws to give Kindertransportees a German state pension. However, for many Kindertransportees their new German state pension was affected by their UK insurance record for years before 1948.
Since 2008, you can have these years removed if this will make you eligible for a higher German state pension.