The present invention relates to T cell receptors (TCRs) which bind the HLA A2 restricted FMNKFIYEI (158 166) peptide epitope derived from a Fetoprotein (AFP). Certain preferred TCRs of the invention demonstrate excellent binding characteristics and specificity profiles for this AFP epitope. T cell receptors of the invention comprise at least one TCR alpha chain variable domain and/or at least one TCR beta chain variable domain the alpha chain variable domain comprising an amino acid sequence that has at least 90% identity to the sequence of amino acid residues 1 112 of SEQ ID No: 2 and/or the beta chain variable domain comprising an amino acid sequence that has at least 90% identity to the sequence of amino acid residues 1 112 of SEQ ID No: 3.
