<Li> Colin Fassnidge (Judge)--Making his first appearance as a guest judge in series 4, Colin joined the blind tasting panel for Sudden Death cook - offs . He was also involved with additional judging roles such as facilitating the Comeback Kitchen and Food Truck challenges in series 4 and 5 respectively . In series 6 and 7, Colin and Manu had rotated roles for judging . Colin was present for People's Choice and off - site challenges, while Manu was involved in Headquarters challenges . Colin was also featured for the first time in an Instant Restaurant round in the same series . </Li> <Li> Blind Tasting Panel--During Sudden Death cook - off eliminations, the blind tasting panel are asked to score and judge the competing teams' meals . This panel currently consists of Liz Egan, Guy Grossi, Karen Martini and Colin Fassnidge . Previously it also included Jacqui Gowan in series 1 only and Tobie Puttock until series 3 . From series 1 to 3, the panel had knowledge of which teams were cooking . From series 4, as a blind tasting panel, they do not know who the competing teams were until scoring . </Li> <Li> Guest Judges--Series 7 introduced new special guest judges who appeared in specific challenges alongside the main series panel . They include, Rachel Khoo during Round 3 of the Instant restaurants and Curtis Stone during the first Kitchen HQ challenge . In series 8, Darren Robertson was included in an instant restaurant round . </Li> <Table> <Tr> <Th> Judges </Th> <Th_colspan="10"> Series </Th> </Tr> <Tr> <Th> </Th> <Th> </Th> <Th> </Th> <Th> </Th> <Th> 5 </Th> <Th> 6 </Th> <Th> 7 </Th> <Th> 8 </Th> <Th> 9 </Th> <Th> 10 </Th> </Tr> <Tr> <Th_colspan="11"> Current </Th> </Tr> <Tr> <Td> Pete Evans </Td> <Td_colspan="9"> Series Judge </Td> <Td_colspan="1"> </Td> </Tr> <Tr> <Td> Manu Feildel </Td> <Td_colspan="10"> Series Judge </Td> </Tr> <Tr> <Td> Colin Fassnidge </Td> <Td_colspan="3"> </Td> <Td_colspan="10"> Blind Tasting Panel / Judge </Td> </Tr> <Tr> <Td> Karen Martini </Td> <Td_colspan="10"> Blind Tasting Panel </Td> </Tr> <Tr> <Td> Guy Grossi </Td> <Td_colspan="10"> Blind Tasting Panel </Td> </Tr> <Tr> <Td> Liz Egan </Td> <Td> </Td> <Td_colspan="9"> Blind Tasting Panel </Td> </Tr> <Tr> <Td> Curtis Stone </Td> <Td_colspan="7"> </Td> <Td_colspan="2"> Guest </Td> <Td> </Td> </Tr> <Tr> <Th_colspan="11"> Former </Th> </Tr> <Tr> <Td> Tobie Puttock </Td> <Td_colspan="4"> Tasting Panel </Td> <Td_colspan="6"> </Td> </Tr> <Tr> <Td> Jacqui Gowan </Td> <Td> Tasting Panel </Td> <Td_colspan="9"> </Td> </Tr> <Tr> <Td> Rachel Khoo </Td> <Td_colspan="7"> </Td> <Td> Guest </Td> <Td_colspan="2"> </Td> </Tr> <Tr> <Td> Darren Robertson </Td> <Td_colspan="8"> </Td> <Td> Guest </Td> <Td> </Td> </Tr> </Table>

Who are the four guest judges on mkr