The Open Palace Programme starts in Bath.

Heathrow Airport is just 100 miles east of Bath on the M4 motorway. A regular National Express coach service goes direct from the airport to Bath. Complete journey time 120 to 180 minutes.

Alternatively, a Heathrow Express train service runs between the airport and London Paddington train station where you can then pick up a direct train service to Bath Spa train station. Complete journey time is approximately 135 minutes.

Bath Spa train station is located in the centre of Bath. It is a short walk from the city’s shops and attractions and from your accommodation.

The Bath Travel Guide provides excellent information on travelling to Bath by car, bus or train.

http://visitbath.co.uk/travel-and-maps/bath-travel-guide

The Open Palace Programme ends in London. You can travel to Heathrow by bus, coach or tube from Central London.