You can find lots of trading standards advice online:

Action Fraud

A national reporting centre for internet crime and fraud. It also offers advice on how to spot and avoid scams.

Advertising Standards Authority (ASA)

The independent body that regulates advertising across all types of media, including online.

Association of British Travel Agents (ABTA)

Provides guidance on a wide range of holiday issues.

Buy With Confidence

A Trading Standards approved trader scheme.

Financial Conduct Authority (FCA) 

The financial regulator for the UK. The FCA help people protect their money. They also regulate financial organisations such as banks.

Get Safe Online

A website providing computer users and small businesses free advice. They help people to use the internet confidently, safely and securely.

Sutton Citizens Advice

An independent charity offering advice on a range of consumer subjects.

Office for Product Safety and Standards

Aims to promote and protect customer interests throughout the UK. They ensure businesses are fair and competitive.

Think Jessica

A website which offers advice and assistance in dealing with scam letters.

Trustmark

A scheme supported by the government, consumer groups and the building industry. They help you find reputable tradespeople.