I've had a subscription to FindMyPast Pro for a few months now. It has served me well, with the added newspaper searches very useful. Still I have to spend £11 a go for certificates when I feel I need them.
Last night while watching the latest episode of "How Do You Think You Are",the one about David Walliams family I noticed he was able to search and then see online a marriage certificate? Does anyone know what website he would have been using to get that? Could have saved me a fortune with the GRO.