Scrap tyres have been pyrolysed in a fluidised bed reactor in relation to temperature of pyrolysis and fluidising velocity to determine the aromatic content of the derived pyrolysis oils. The fluidised bed reactor was 7.5 cm diameter x 100 cm high, constructed of stainless steel with full gas flow and temperature monitoring. The temperature range studied was from 450°C to 600°C. The fluidising gas was nitrogen. The derived oils from the pyrolysis were condensed in a series of cold traps, the derived gases were collected in a series of gas syringes and analysed off-line by gas chromatography. The derived oils were analysed by gas chromatography and coupled gas chromatography/mass spectrometry to determine the content of high value aromatic compounds in the derived oils. The main gases from the pyrolysis of scrap tyres was found to be hydrogen, methane, ethene and butadiene with lower concentrations of other hydrocarbons. The gas concentration increased with increasing temperature of pyrolysis. The yield of oil was between 55% and 44%, decreasing with increased pyrolysis temperature. Detailed analysis of the oils revealed the presence of benzene, xylenes, toluene, styrene and limonene. Increasing the temperature of pyrolysis resulted in an increase in toluene and xylenes and a corresponding decrease in limonene. Increasing the fluidising velocity also decreased the residence time of vapours in the fluidised bed and resulted in an increase in limonene concentration and decrease in toluene and xylenes concentrations in the derived oils. The aromatic hydrocarbons found in the tyre pyrolysis oils are regarded as high value chemicals in the petrochemical industry and were present in economically significant concentrations in the oil.