Tommy was previously banged up for eight years for drugs-related offences, which again alludes to the Kneževićs who having been running the illegal narcotics trade in Yorkshire for years.
The character may even have been a corner boy for the Kneževićs the first time he was locked up, this suggests Tommy and Darius may even have grown up together.
Tommy is a long-time associate and even friend to Darius with the pair going through the wars together in their formative years.
The criminal seemed to actually listen to Darius and for the first time, he appeared to be straight-talking with him.
Apart from Darius, Ryan was the only other person Tommy seemed to let his guard down around, showing their connection.
Happy Valley season 3 concludes on BBC One on Sundays at 9pm
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