@smallfry wrote: You might want to combine those HSBC limits if you can. With the small limits you pretty much lock yourself into lower approval limits. I would wait on new applications.
HSBC isn't very nice about this. Are those "real" HSBC cards or Household or Orchard cards? HSBC will allow you to combine cards, but they do not guarantee that you will get the entire CL. So if you were to try and combine the 300 CL into the 750 CL you could wind up with only a 750 CL.