I've raised £5000 to Retirement due to Mental Health

I will be 64 years old on 9/7 this year and have no family. I left school in July 1969 and as my parents gave me a good work ethic, I started work on 4 August 1969 aged 15 and I’ve worked ever since and NEVER claimed any “benefit”. I will have lived alone for 30 years in August this year and have always been able to keep my own home and pay my bills. In March 2017 I had to quit my job as PA/Office Manager with Network Rail due to being bullied and for the first time in my life I now suffer severe depression. I started my own cleaning business the very next day After I left NWR, but just after Christmas 2017, I contracted a chest infection which lasted 6 weeks and I, of course, was unable to work in such a physical job.
I’m now in a position of having to sell my home to pay my bills and I have NO idea where to go from here. I can’t describe how grateful I would be if anyone could help.....independent references and current CRB available.