can i apply for ILR

[choono]

just to make things clear below is the my timeline followed by my questions

applied t1 general in April 2011, they reused in June 2011 stating I did not provided corroborating evidence for my income , I was not given right of appeal as I still have my PSW so the only option I have was to go to judicial review. I appealed in the high court but my legal representative submitted my case after due date( three months late) , high court refused for being late without actually opening the case. I took the case to the legal ombudsman against my legal representative. I won that case stating that I submitted all my documents and fee in time and it was my lawyers mistake which deprived me to defend myself . On the basis of ombudsman decision I applied a new application (FLR(O) in feb 2013. HO refused I appealed in lower tribunal judge asked the home office to relook in to my case . they refused again in 2014 I appealed again in lower tribunal got decision in my favour but HO refused to open my old file and refused again but they gave me right of appeal , which I did but on case day they withdrew in 2015. I was hoping decision in my favour but to my surprise I got another rejection 3rd time after court instructed HO to reconsider my appeal. luckily I was given right of appeal in lower tribunal in 2016 again judge gave decision in my favour for the fourth time, finally in august 2016 HO allowed my application and said I will receive my BRP in 10 days. I did not received my BRP then they asked to submit new biometrics but still did not received my card when I contacted them they send another letter to give biometrics again still no BRP ,I contacted my local MP to look in to this matter and fourth time I was asked to submit biometrics which I did and finally I got my card in April 2017. Length of my visa is up to sep 2021 and the visa is tier1 general.
My questions are
As I have spent more than five years waiting for HO decision can I apply for ILR now .
Do I have to show income again If I want to apply for spouse visa, in 2011 my income band was 35,000
also is there any requirement for English language for my spouse

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