I was desperate to get a same day appointment for my ILR application.
I found them online, I contacted them and their friendly adviser took my details and the next day I was told that they have got me an appointment at the PEO.
I submitted all my documents to them and they did everything for me, in fact they took all the headache.
I went with their lawyer to the PEO who facilitated the whole process and me and wife and children were granted indefinite leave to remain on the same day.
These guys are worth trying.