Hello! It's great to hear you're planning a trip to Cambridge, Oxford, and Bristol. Here are some tips to help you organize your journey.

Best Time to Visit:
The best time to visit Cambridge, Oxford, and Bristol is during the spring (March to June) and autumn (September to November). These periods provide a favourable climate and several cultural activities.

Route and Accessibility:
All three cities have excellent transport connections. If you're flying in, the nearest international airports are London's Heathrow and Gatwick. From there, you can take a train, coach, or drive to Cambridge, Oxford, and Bristol. Commuting within these cities is easy with public bus services, cycle routes, and taxis available.

Accommodation and Booking:
There's a wide range of accommodations available in Cambridge, Oxford, and Bristol - from luxury hotels to budget-friendly hostels. It's advised to book your accommodations in advance especially if you're travelling in peak seasons to secure the best places.

Clothing and Essentials:
Pack comfortable walking shoes and layers for your tour of the universities and museums. Also, carry an umbrella or a light rain jacket as the British climate can be unpredictable. Don't forget your essential travel documents, adapter for electronics, and toiletries.

Health and Safety:
The UK has a high standard of healthcare. Ensure you have travel insurance to cover any unexpected health issues. Keep emergency numbers handy. Though these cities are generally safe, take precautionary measures such as not leaving belongings unattended.

Local Etiquette and Respect:
British people are known for their politeness. Remember to say 'please', 'thank you', and 'sorry' when it’s appropriate. In museums and other attractions, follow any displayed visitor rules. Be respectful of the academic atmosphere in Oxford and Cambridge.