Anna, who plays "bad cop" Patricia Carmichael in the hit police drama, is now becoming a more popular prediction among fans to be the face of the next Doctor. The 43-year-old has starred in His Dark Materials, comedy Motherland and is now making her mark in the Line of Duty world. The actress has also made a guest appearance in sci-fi favourite Doctor Who before, so it seems likely that she could join the series as the titular role.
Anna has seen her odds slashed to become the next Doctor into 10/1 in the past week, having initially been as far out as 50/1.
Fellow Line of Duty actress Vicky McClure, who plays Kate Fleming, was 12/1, but has been slashed to 7/1 - while Kelly MacDonald, who plays Jo Davidson, is 6/1 second favourite.
Michaela Coel is still the favourite at 4/1, followed by Years and Years front man and It's A Sin star Olly Alexander, who is also 6/1.
Fleabag creator Phoebe Waller-Bridge is also in the running, with 8/1 odds.Insurance Loans Mortgage Attorney Credit Lawyer
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Doctor Who: Line of Duty star Anna could replace Jodie (Image: BBC)
Doctor Who: Will Jodie's replacement be Anna? (Image: BBC)
Betfair spokesperson Sam Rosbottom said: "Line of Duty fans will be excited to see Anna Maxwell Martin join her fellow Line of Duty stars Kelly MacDonald and Vicky McClure among the favourites to be the next Time Lord.
"While she plays the villainous Patricia Carmichael running AC-12, she has shown a warmer side in the likes of hit comedy Motherland, with punters convinced the breakout actress would make a fantastic successor to Jodie Whittaker.
"But the favourite is still I May Destroy You star Michaela Coel at 4/1."
Other people often mentioned as good potential replacements include comedian Richard Ayoade, Oscar-nominated actress