If you're in direstraits in the uk we have the citizens advice bureau in every town and city who provide free advice on any emergency housing needs, employment rights, legal advice and much more. They are literally a one-stop shop for anyone who needs advice about anything. They will point you in the right direction and help you contact anyone you need. (If you don't want to be disfellowshipped, ask if there's anyone who can help represent you legally at any judicial meetings. It's your human right to a family life and in time, if you're not dis'd your family can talk to you again!)
In order to be accepted as homeless you will require a letter from the owner of the property you are residing in saying that they no longer want you there. Take this to the council's housing dept. In the town/city where you live to start the process for emergency housing. Check their website for other documents you'll need to take.
Both the citizens advice and the government housing dept have websites. Google them.
"Shelter" are a charity and provide emergency shelter in uk. They have a website.
Go to your local government jobcentre and look on the boards for jobs with accomodation and also ask the staff.
Join exjwreddit website to get friends quick who understand and might be able to help you in uk.
Join social forums in your area and make friends.
Look up old school friends. You can search on facebook for them and meet up. You'll probably find they're already connected in one group.
If you lose your job, i think you can apply for an emergency grant from your local benefits office. I did that when i left but that was 20 years ago. Use the citizens advice bureau for all of your living needs and legal needs. That's what they're there for and it's free! They have a solicitor on duty. Whilst at the benefits office get info on what financial support you're entitled to.
Google your local food bank if you don't have money for food. Many community run places offer free meals on certain nights.
A lot of pubs and hotels have accomodation for staff that need it. You could apply for a job as a kitchen porter locally and say you need accomodation. Look into pub companies for manager training positions with accomodation. Gumtree is also another source for jobs that come with accomodation. So is craigslist. Trawl the internet for jobs with accomodation. If you live near countryside check any stately homes as they have live-in positions for general staff. If you fancy getting away from it all check out websites offering jobs in other countries. It's a bit late for ski season but summer season is coming. These jobs can come with accomodation. Temping agencies will have janitor jobs.
There's no need to panic. Be glad you live in a country that does all it can for people in need.
What i did is took 3 part-time jobs and went from no friends to loads of friends in a very short space of time. And people care! Especially when you open up... most will help you out willingly!
And if you are legit and recieve outside help, when you're back on your feet, pay it forward and help others. (You know, the worldly ones:) there's gonna be a mass exit of jw's from .u.k. if this Goddard inquiry is anything like the australian one and these people will need help too. (It's already started and i fear that the councilling services in uk need to start getting up to date on the psychological aspects of this niche group before it's too late. I don't want to see more lives being lost!)
Let us know how you get on.