Hello! That sounds like an exciting trip throughout England. Here are a few tips to help you plan your travel.

Best Time to Visit:
The best time to visit England, including London, Liverpool, and Manchester, is during the spring (late March to early June) and autumn (September to November), when the weather is generally mild and the tourist crowds are less.

Route and Accessibility:
All three cities are well connected with an efficient public transportation system. You can reach London via its multiple international airports, such as Heathrow and Gatwick. Once in the country, you can easily travel to Liverpool and Manchester by train.

Accommodation and Booking:
All three cities have wide ranges of accommodation options, from luxury hotels to budget-friendly hostels. You could use online travel booking platforms like Booking.com or Airbnb for reservations. Always book in advance to get a better deal and avoid last minute hassles.

Clothing and Essentials:
Depending on the time of your visit, pack essentials like a light rain jacket as it can rain any time in England. Also carry an umbrella, comfortable walking shoes, layered clothing, and an adaptor for your electronics. England uses type G plugs and sockets.

Health and Safety:
England is generally a safe country. Ensure that you have travel insurance covering your whole stay. If you're from a non-EU country, check if any vaccines are required before travel. In case of any emergency, dial 999.

Local Etiquette and Respect:
English people are polite and respectful. Be sure to follow queue etiquette, respect people's personal space, and avoid loud behavior in public. Tipping is customary in restaurants and taxis.