NHS Evidence https://www.evidence.nhs.uk/, which now sits under the NICE banner, has combined numerous information products that used to sit separately on different websites. Many of the information products were from the former National electronic Library for Health (NeLH). Types of information are grouped for ready retrieval and come from many sources – from associations, patient groups, government and health bodies (not all of them UK based). You can tell by the source list that it’s a curated one. One of the sources is the former CRD HTA database (new HTAs are available through the INAHTA website under Publications). If you just want to access NICE guidance, the tabs at the top of the page enable you to do that.
There are other evidence aggregators (like TRIP for example) so don’t just stick to searching one if you are doing a extensive search.
Exploring the Evidence Base 