UK passport holders travelling to Turkey as tourists, will not need to purchase a tourist Visa in order to enter the country (applicable for visits of up to 90 days in any 180 day period).

Your passport should be valid for a minimum period of 150 days from the date of entry into Turkey and will be stamped with your date of entry on arrival. You will need to have a blank page available in your passport for this. Your passport will also be stamped with the date of exit when you leave the country.

The latest information regarding entry requirements for UK nationals can be seen here: https://www.gov.uk/foreign-travel-advice/turkey/entry-requirements#visas

Residents from other countries will need to check their individual Visa and passport requirements.

Health care in Turkey is not covered under the E111 as in the European Union and private health cover is necessary.  However the standard of private care in the area is excellent and generally significantly cheaper than European private hospitals. 

It is therefore very important that you have adequate insurance cover in place before travelling.