I'm passing this message on from a colleague (not myself!) , if you have any information please contact Sussex Police on 101:
Richard walked out of his sheltered housing in Hove at 9pm on Monday and has not been since so this the fourth night with no news. If as many people as possible know and spread this information it could help us find him.
There is a possibility that Richard has headed over to the Hasting area, as he used to live in that area. Our Hasting campus is helping by displaying the attached flyer. However we are not sure so we need to keep looking for him in Brighton as well.
He is currently wearing a dark blue jacket, jeans, purple coloured trainers and a black with a green turn-up beanie hat with BENCH across the it (the attached flyer has a picture) and he may be carrying a rucksack.
The Argus has put this on their website and apparently the more clicks on the story the longer it will stay on the website so more people will read it and there is also the opportunity to spread it on Facebook or twitter.
www.theargus.co.uk/news/10835700.Have_you_seen_missing_Richard_/?ref=mr
If you have by any chance seen him the best thing to do is contact Sussex Police on 101.