Thank you for your interest in going up Big Ben. You can find out more about the tour by visiting http://www.parliament.uk/visiting/visiting-and-tours/bigben/
There are 334 spiral stone steps with only a small respite. There is no lift; therefore, visitors should feel confident about making the climb and descent. For safety and comfort flat shoes should be worn.
Owing to the nature of the tour it is not suitable for all visitors and requires a certain degree of good health and fitness. People who suffer from vertigo (fear of height) or claustrophobia (fear of confined / enclosed spaces) are advised not to attend the tour. The tour is not suitable for expectant mothers.
Visitors should not undertake the tour if they are feeling unwell or are experiencing known health problems that would affect their ability to complete the tour safely, as the tour is reasonably strenuous, and there is no lift. Such ill health problems may include the following: heart condition (e.g. angina), Asthma or other breathing related difficulties, Epilepsy, High blood pressure, Back or leg problems, Recent injury or operation.
The Clock Guide reserves the right to refuse access to the Tower if he/she feels that a visitor's physical or mental well being may endanger themselves or any other participants of the tour.
Visitors are requested to follow the Clock Guide's instructions at all times while within the Westminster Clock Tower and the adjacent area.