Isles of Scilly
The Isles of Scilly (Cornish: Ynysek Syllan)  is a small archipelago of islands in the Atlantic Ocean, off the Cornish coast in the South West part of the United Kingdom. The Isles of Scilly were designated an official Area of Outstanding Natural Beauty in 1975.
There are five inhabited islands:
And a large number of smaller uninhabited islands and islets:
St. Mary's is the largest island with a population of around 3000. Most commerce is centred here as is the vast majority of the tourism related infrastructure. Hugh Town is the main centre. Tourist numbers are naturally limited by the spaces on the boat or planes, so in Scilly you can leave Cornwall's tourist hordes behind - and arguably enjoy even finer scenery.
The other four inhabited islands, collectively known as the off islands, are home to between 30 (Bryher) to 150 (Tresco) people.
Much of the land is owned by the Duchy of Cornwall, a royal estate intended to provide an income for the heir to the throne, and you'll spot the characteristic signs of estate management here and there. It also means these quiet islands are frequently used by minor royalty as a holiday home where they can lead a normal life without being besieged by crowds.
The Isles of Scilly have a temperate Oceanic climate, amongst the mildest and warmest climates in the United Kingdom. The average annual temperature is 11.6 °C (for comparison the average in London is 11.0°C). Winters are amongst the warmest in the country due to southerly latitude and moderating effects of the ocean. Summers are not as warm as on the mainland. This is perhaps the sunniest area in the UK with on average 7.6 hours per day in July. On average there are less than 2 days of air frost per year. This balmy climate has resulted in the islands developing a thriving flower industry.
The passenger ferry MV Scillonian III runs from Penzance to Hugh Town on St Mary's and the crossing takes about two hours and 40 minutes. This service runs from March to the end of October. It leaves Penzance in the early morning and returns late afternoon/evening. It is possible to take a day trip (with four hours onshore, longer on some days when there is a double sailing). Open returns are £95 with day trips from £25 — at off peak times check for vouchers in The Cornishman newspaper.
Fixed wing planes operated by Skybus  fly from Land's End, Newquay, Exeter, Bristol and Southampton to St. Mary's Airport, priced from around £125. Flights to and from Newquay normally connect with the Ryanair and Airsouthwest services to and from London Stansted/Gatwick.
The helicopter service, which was terminated in November 2012 connected Penzance Heliport with St. Mary's Airport from 1964 to 2012 and was the world's longest running scheduled helicopter service. The Tresco service was subsequently inaugurated in 1983.
Between the islands
Each island is serviced by a network of inter-island launches that run daily from 1 April through to the end of October each year. Apart from direct trips between the islands, circular sightseeing tours are also offered giving the opportunity to look at the extensive wildlife in and around the islands, particularly the large colonies of Atlantic seal and sea bird colonies. For example, a Three Islands day tour would visit Bryher, Tresco, and St Agnes, giving an hour or two time ashore on each for walking and exploring.
One of the most popular trips is to see the puffins who arrive to nest in late April, leaving the Isles in early August.
The boat service in winter is governed more by wind and tide, but daily, direct trips still take place with the occasional circular journey when the weather is sufficiently benign.
Transport on St. Mary's
Scilly is made for walking, and the relative lack of cars and other motorised transportation creates an atmosphere that is a luxury few can enjoy in their home towns. St Mary's is larger than the other islands, but a walk to furthest reaches and back to Hugh Town is easily manageable for most people.
An infrequent bus service operates between Hugh Town and the airport.
There are a few local taxi operators and these are best looked for in the centre of Hugh Town. Like everything else on Scilly, these are rather laid back and seem to be not working more often than not!
Bicycle hire is widely available and if you are not up for walking everywhere, are the best way to see the islands.
Transport on the off islands
There is no public transport available for day visitors. However, transport is normally provided to and from the quay or heliport (on Tresco) to your accommodation. This ranges from old land rovers to golf carts. On Tresco there are tractors with trailers, and it is often said you won't ever find as many millionaires riding on the back of a tractor as you do on Tresco!
Bike hire is available on all the islands, but again walking is easy and very pleasant.
On the water
Exploring the islands on foot
Keen birders will need no introduction to the Isles of Scilly. This is the Mecca of birding in Great Britain and probably the whole of Europe. The islands are ideally positioned to be the point of landfall for many scarce migrant species in spring and especially in autumn. Each October, many hundreds of expert birders from Britain and further afield converge on the islands.
The slightly less keen will still find plenty to interest them in the summer months as the islands host several important seabird colonies.
Lots of locally produced food and gifts are available. Scilly is famous for its flowers, and a wide variety of bulbs are available. St. Agnes wildflower honey, St. Agnes ice Cream, St. Agnes eggs, Scillonian soap, island beef, locally caught fish and shellfish, and the list goes on.
If you are staying in self-catering accommodation on one of the off islands, you really should stock up with groceries from the Co-op supermarket on St. Marys. The shopping facilities on the other islands are very limited.
There are banks with ATMs on St. Mary's (only).
Each of the inhabited islands has its own pub, and St. Mary's manages to support five. The opening hours of all Scilly pubs vary greatly according to season. In the low season (November to April), many do not open at lunchtime.
Most accommodation is on the largest and most populated island, St. Mary's, which has plenty of accommodation of all kinds. The other islands have more limited accommodation. Demand for accommodation exceeds supply, so prices are high, even by English standards, and early booking is advisable.
With the balmy climate, camping is a great option on Scilly and of the inhabited islands, only Tresco does not have a camp site. During the height of summer (June to August), booking is a must.
St. Agnes is the only inhabited island without a hotel and is therefore the quietest, with just a handful of few bed and breaksfast and holiday cottages.
Tresco is a private estate which runs an upmarket timeshare resort, and has a hotel and a pub.
Local people do not use and do not like the expression "The Scillies". Local usage is to refer to "Scilly".
The islands are nearly crime-free. The biggest dangers are probably from bicycle theft or from the odd rowdy group of drunken visitors so lock your bike if it is outside a pub on a Friday or Saturday night.
You will not want to leave, and the only way out by public transport is back to Cornwall. It will feel strange when you return.