With the austerity measures likely to now continue, many more people may be unable to afford vet's bills. The PDSA who do a fabulous job, will probably be stretched to cope.
Meanwhile, the RSPCA, have been utterly dismal in responding to any requests to help animals in need, both from myself and from others I know. They also, as far as I am aware, have a lot of legacies left to them, but have consistently refused to help struggling smaller animal charities.
If you are thinking of making a donation, the PDSA is definitely my choice.