Sure! Here are some helpful travel tips for your trip to London, Bath, and Oxford.

Best Time to Visit:
The best time to visit these cities in the UK is during the late spring (March to June) when the temperatures are mild and the parks are green. Alternatively, autumn (September to November) is also a beautiful time to visit.

Route and Accessibility:
All three cities are easily accessible by train from one another. London is the main hub and has trains going regularly to both Bath and Oxford.

Altitude and Acclimatization:
Unlike destinations at high altitude, these locations will not require any special acclimatization.

Accommodation and Booking:
The UK has a wide range of accommodation options. Do remember to book in advance, particularly in peak tourist seasons. London can be quite expensive, so looking at options in nearby areas can be a good idea.

Clothing and Essentials:
The weather in the UK can be quite unpredictable. Even in summer, it’s wise to carry a light waterproof jacket. Comfortable shoes are recommended as you will likely do a lot of walking exploring these cities.

Health and Safety:
These cities are generally very safe but as with anywhere adhere to basic safety measures such as not walking alone late at night in unpopulated areas, watching your belongings etc.

Local Etiquette and Respect:
Residents in the UK are generally polite. Maintain politeness, respect queues, and speak quietly in public places.

Remember, the UK plug socket is type G, so you might need to bring an adapter with you. London’s public transport system is massive and can be confusing, so get an Oyster Card for the duration of your stay, it's the easiest and most cost-effective way to navigate the city.