 The nave and chancel are carried on five pairs of piers and the interior has a boarded wagon roof coloured in blue , crimson and gold which stretches the whole length of the church . At the time of the construction of the Bristol and Exeter Railway , William Froude – the engineer given responsibility for this section of the line by Isambard Kingdom Brunel – inserted iron stringers to prevent the walls from spreading as a result of vibrations from the trains . A screen runs across the whole width of the church . 
