No longer officially called the 170A I believe, but you still have to prove you are ready to test before flying with a CAA examiner. Some places may include it in the course price. Others may not. Check first and find out exactly what the score is. Some places may even charge their own test fee for the '170A'
The place I went to included both the 170A, and the aircraft hire for the test, so the only thing I had to pay was the basic course price, and the CAA test fee, which was a very good deal. Be very clear about what the school charges extra for as it could easily ammount to an extra £1000.