We went to Parcevall Hall Gardens for the first time yesterday- it's a real hidden gem in Wharfedale, I'd recommend it if you're up this way.
http://www.parcevallhallgardens.co.uk/ (http://www.parcevallhallgardens.co.uk/)
Shame the daffodils had just about finished but the rockery plants were lovely- never seen such big trilliums before.
One RHS member free in April, May and October.
Went last year - fantastic stand of early purple orchids in the woods behind. Really nice little garden, even if the lanes leading down to it are a little hairy!