Absolutely, those are popular destinations in the United Kingdom with their own unique features. Here are some useful travel tips to bear in mind:

Best Time to Visit:
The best time to visit the UK generally is during the spring (late March to early June) and autumn (September to November). The weather during these periods is usually mild and tourist attractions aren't too crowded compared to the summer months.

Route and Accessibility:
All these cities are well-connected via trains, buses, and flights. London has several International airports with excellent connectivity. Salisbury, Lincoln, and Canterbury are reachable by trains from London.

Altitude and Acclimatization:
The elevation is not a significant factor in these English cities, but if you're sensitive to colder, damp weather, acclimate by dressing warmly and keeping an umbrella close at hand because the English weather can be unpredictable.

Accommodation and Booking:
Accommodation options range from luxury hotels, bed & breakfasts to budget hostels. It's advisable to book your rooms in advance, especially during the holiday season or during popular events.

Clothing and Essentials:
England weather is infamous for changing rapidly. Pack a variety of clothes suitable for all weather types, including rain gear (like a light raincoat or umbrella). An EU adapter plug for your electronic devices is also essential.

Health and Safety:
The UK is generally safe, but normal precautions should be taken, like not leaving your belongings unattended and being cautious in crowded places. If you have travel insurance, make sure it covers your planned activities.

Local Etiquette and Respect:
The British are known for their politeness and queueing culture. Please respect it. Tip 10% to 15% at restaurants if a service charge hasn't been included in the bill. While visiting churches or cathedrals, dress modestly, and keep your voice low.