I am often asked about getting a Tier 2 visa to allow freelance contracting. Unfortunately, Tier 2 is not the answer for those that want their own consulting/contracting business. If that is what you want, try Tier 1 (Entrepreneur), although it does require £200k to invest!
The last few years have seen a severe crackdown on companies that sponsor staff and send them unsupervised to work for months/years on a client site, so simply finding a 'friendly company' to 'process your Tier 2 visa' is not what it is about either.
But there is hope. If you have the technical skills to command a good 'charge out rate', and also the business/entrepreneurial acumen to identify opportunities in the contract market, then you have a valuable combination of skills that should make you attractive to any number of bona fide consultancies.
The things to consider are:
1) Don't be shy: highlight the great things you can bring to an employer eg 'AEM Scrum Master '& 'rainmaker' bringing clients offering £500/day'
2) Don't be longwinded: Condense your CV, & treat the first page as your 'shopfront' for the details that will get you hired
3) This is a numbers game. 10 applications a day, x 5-7 days a week, for c3 months will mean you have pursued more than 600 opportunities. That should give you an offer or two to choose from. Putting something on your linkedIn profile & siting back waiting for the world to find you is just playing the lottery (most people, other than the operating company, loose from lotteries)
Once you get some interest, if the company that wants you does not understand Tier2, I, or workpermit.com, can probably help them / you
Good luck searching