No telling who could benefit from knowing this exists. Basically the RSPCA keeps your pets safe while you leave a dangerous situation and until you can sort somewhere else to live.
It’s also not the only program like this. There’s are others and also Pets Of The Homeless, who will temporarily foster your pet/s to give you a chance to get back on your feet and reclaim them.
Pretty much moot when single people are finding it nearly impossible to find emergency and then long term housing.
Friends and family are the way to get help and in that case pets are not that difficult to accommodate.