hello nannygee,
good to hear from you again.
'Legal Highs' are substances that mimic the effects of much harder drugs, probably making people feel either sedated, euphoric, or some even cause hallucinations, but they clearly can be very dangerous.
First thing to note is that they are not necessarily legal, just that the authorities have not yet had chance to examine and classify them under the dangerous drugs act or misuse of drugs act.
(note that ordinary household polishes and sprays can be misused also)
There are probably hundreds of 'legal highs' being created in chemical laboratories around the world every year.
Hopefully the 'powers that be' are concentrating on the ones that are causing the most concern as a priority.
It would easily be possible to report concerns about a local 'trader' to the Police who have powers to warn retailers about selling household products which are being 'abused' and Police in Eastbourne are already doing this.
The Police would give advice on your particular concerns and should be able to look into the matter and give you their 'take' on the situation, hopefully this means they would visit the local trader and warn him of their powers to shut him down immediately.
The following site gives key information and phone numbers if you are concerned.:
http://www.talktofrank.com/drug/legal-highsTalk to an advisor on Telephone 0300 123 6600