Absolutely! Here are some travel tips for your trip across London, Edinburgh, and Dublin:

Best Time to Visit:
The best time to visit these cities is during the spring (Late March to June) and autumn (September to November). The weather is mild and the crowd is relatively less compared to the summer months.

Route and Accessibility:
In London, the city's extensive Tube network is the most convenient way to get around. From London to Edinburgh, you can take a train, fly, or drive. From Edinburgh to Dublin, the quickest option is to fly.

Altitude and Acclimatization:
Altitude is not a considerable issue in these cities. However, it's important to rest after your flight to overcome jet lag.

Accommodation and Booking:
Book your accommodations well in advance. You might encounter higher rates if you don’t book early. Options include hotels, bed and breakfasts, and vacation rentals.

Clothing and Essentials:
Carry a good quality umbrella and a waterproof jacket irrespective of your travel season due to unpredictable rains. Wear comfortable walking shoes as you would be exploring the cities mostly by foot.

Health and Safety:
Be vigilant about your belongings, especially in crowded areas, to prevent pickpocketing. Stick to the driving laws if renting a vehicle.

Local Etiquette and Respect:
People in these cities appreciate good manners and politeness. When in pubs, it's common to buy a round of drinks for you and your group. In London, always stand on the right on escalators to allow others to pass on the left.

And most importantly, be mindful of the COVID-19 protocols established in each city. Check travel guidance and restrictions and prepare accordingly. Enjoy your trip!