HFT have published a very comprehensive 44-page brochure for people with learning disabilities and those closest to them to choose a holiday. It covers everything from general information and advice, insurance, benefits and help, to lots of ideas for places to stay in the UK and abroad.
You can download the guide as a PDF file here: http://ldox.org/info/holidayinfoguide2015
You can also request a printed copy by post on HFT’s website: http://www.hft.org.uk/holidayinformationguide