Re Adelboden, that is a hard question to answer.
You can report to the Care Quality Commission, but they are a shonky organisation, you can take it from me. Chances are they won't do much, they don't investigate individual cases anyway, but you are just acting as a grass, so when they go in they have some inside information on the place to keep them on their toes. But as and when they do go in, that could be two years down the line.
This year I filed a massive complaint about a care home with really quite damning evidence. The CQC acted immediately - and promptly improved the care home's rating! They sent someone round but warned no one in advance (except the care home most likely, as the food was sumptuous that day), left no details as to the name or photo or the inspector, they never spoke to any of the relatives though we were there hours at a time.
Complain to the CQC by all means, but that's so they don't have plausible deniability.
Social Services? Sadly there are in cahoots with care homes I think, they have a cosy deal going where the care home provides cheap accommodation for the elderly in return for the Safeguarding head turning the other way. If you complain while your elderly relative is at risk, I am not sure how this will pan out as Social Services could gang up with the care home against you, see an earlier post on this. They can even have you barred from the home on a trumped up abuse charge that - get this - they will not even inform you about.
See Eileen Chubb's Compassion in Care site and twitter feed on all this.
Who else? Well, you can report errant staff to the Nurse and Midwifery Council, but they will notify the care home at once to let them know you have filed a complaint and then take up to a year to even start the investigation! So your relative is a sitting duck all that time in their care while they plot revenge. Still, the NMC may be more neutral than others.
Abuse can be reported to the police, but don't hold your breath. If they couldn't secure a conviction for Merok Park which got shut down the by CQC, what hope have you got?
You could take it to the local MP, depends how sympathetic they are.
Also you can report the home to the ASA (advertising standards authority), if they boast of something on their flyers or website that isn't there. Worth a try.
Or go the local press. That will do massive damage to the home and raise awareness and is not pretty should your relative be there. Social Services will hate you with a fierce venom and quite possibly launch a campaign of intimidation and harassment against you - as they have done with me - using your relative as bait, particularly if you don't have Power of Attorney in Health and Welfare, They will attempt to target any other elderly relatives you have on the scene, you will be accused of endangering other residents at the home, or abuse or intimidation, of being a feeding hazard and so on, the home will be authorised by them to call the police out on you to try to get you arrested. The copper will be bemused and leave it at that, but they will later say quite truthfully that 'at one point the police were called' on your relative's medical notes. All this will go on behind the scenes, so you won't quite know what is going on, you will still think, wow, Social Services are the good guys, they are on my side, wait til they hear about this.
So if you are doing that, maybe relocate your relative to a neighbouring county.
However, every time they Google that home, the horror story will come up thanks to the story in the local press.
So a lot depends on your situation really.