There are several sources of help if you are not sure whether something is a scam or not.
The Citizens Advice Bureau has a very useful site helping you to check whether something is a scam and what to do if you, or a friend, feels they may have been a victim.
The Online Scams Helper covers emails, social media and websites and takes you through a series of simple questions and then gives advice based on your answers.
There are a number of sites where you can report scams:
You can also sign up with Action Fraud for free email or text alerts about scams of any type happening in your area.