I missed that 555. It's unlike London to delay when the correct documents have been provided so it's right to dig around to see if something was missed.
As you were not married at the time of birth and your daughter is under 8 you need to go to the family court to get full parental rights which is required by Immigration to get a 12 month extension. Is that what you mean by "went through the courts to legitimise my daughter" because I thought that was expensive and took some time?