Kimmeridge Bay and Tyneham Village can only be visited on foot, so once you get to either of them, you will have to walk. Kimmeridge Bay also requires you to go down some steep steps (and back up again later of course).
Be prepared that if you plan to walk between Tyneham Village and Kimmeridge Bay, that it is going to take you some time. Take warm clothes and waterproof ones as the weather can change quickly at the coast. Also do not stray off the path as there is a tank firing range in the vicinity.
Whilst It is possible to walk from Tyneham Village to Kimmeridge Bay (and vice versa), it is far quicker to drive. You are really going to need to get a car (or other motor vehicle to get to either of them in the first place).
However if you do walk, you should be rewarded with some stunning scenery!
It is possible to walk from Tyneham Village to Kimmeridge Bay, and vice versa. However you are really going to need to get a car (or other motor vehicle to get to either of them first). Once you are at one of them, it is really much easier to drive as it would take a long time to walk between them (and then you would have to walk back too).
At Tyneham Village it only costs £1 to park, so if you are going to walk between them, it is better to park at Tyneham which is £2 cheaper.
When we were there, there was nobody collecting money, and the was a collecting box to pay into.
The only sensible way to get to Kimmeridge is by car (or other motor vehicle). It is rather out the way, and involves quite a few very steep slopes.
When you get near the bay, you have to stop and purchase a ticket that gets you into the Smedmore Estate (which is the private estate that own the land around the bay).
The cost of entrance is by the vehicle itself rather than the number of occupants in the vehicle. For an ordinary car, the price is £3. This entitles you to park when you arrive at the bay.