Plane tickets – use your favourite flight search engine. If you don't have a favourite, try kiwi.com.
Car rental – there are several reputable car rental companies at Gatwick Airport. If you don't have a favourite, try AVIS. Consider getting full car insurance – in the UK they drive on the left, plus some of the local roads are very narrow. Rent a bit more comfortable car, after all you will be using it a lot, so convenience is paramount. BEWARE of mileage restrictions – choose a no-restriction offer or your rental may become more expensive.
Tickets – for some activities it is essential to buy tickets online in advance – at the very least do this for St Michael's Mount and Stonehenge. If you are a Jane Austen lover, then you will also need to book in advance at Jane Austen's House.
Prices at the destination – standard prices. The only thing that may surprise you is the relatively high prices for parking.
Money exchange – no need to change money, most places accept credit cards. Alternatively, withdraw money from an ATM at an established bank.
Calling and data – The UK is not a member of the EU, check with your operator for call and data terms. WiFi is common in hotels and restaurants and is free.
When to go – Given the huge popularity of the local seaside resorts in particular, opt for late spring or early autumn. In principle, you can go in winter, but the days are short, and you won't be able to go through with the whole programme.
Niky Malečková