Foreign Office Advice
Foreign, Commonwealth & Development Office - For the latest travel advice from the Foreign & Commonwealth Office click here
Passports and Visas
For passports, different countries have different rules on how long passports must be valid for. Since the UK left the EU, clients travelling to Europe must have passports issued less than 10 years before the date they enter the destination country and valid for at least 3 months after the day they plan to leave.
Health
Travel health advice can be found here
Travel Insurance
Travel insurance is important, and you should take it out as soon as possible. See the Government's Travel Aware campaign here