There's Hill View at Packington, think they do DIY now, there's Home Farm at Normanton Le Heath, Heather Hall in Heather, Broomleys Farm in Coalville, Markfield Equestrian Centre, there's one in Griffydam but I can't remember it's name lol
Id reccommed NVEC. ive also been to markfield, but the other would be my choice. Greart facilities, lovely people - no crappy mismangement, or liveries creating trouble, or over priced. a few shows to keep things interesting without constant annoyance or lessons getting in the way of facilities your paying to use. Just bang on.