A flight to Ankara is easily available on the internet and a journey there usually involves at least one stop-over. Swissair and Lufthansa have journeys that involve a change in Munich or Zurich. There are other flights with Pegasus and Turkish Airlines that make a change in Istanbul. Flights can take as little as 6 hours but can take substantially longer depending on the options chosen. The options available include many of the London airports all of which have good transport links both public and private. A cheap flight can be found by searching on the internet and all the options can be looked at.
The city of Ankara is an ancient and historic place and can lay claim to one of the cradles of civilization, from the Hittites to the present day it has been an important and beautiful city.