We have reason to believe that the missing woman has been murdered and we'd urgently like to speak with Jack Wall in connection with the inquiry.
It is likely he may be in the Stevenage area, but he could be further afield.
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The 5,000 ecstasy pills had an estimated street value of £36,000.
Police say it is "too early" to know if the body is that of journalist Kim Wall, who is believed to have died on board an amateur submarine.
'I'm not a fan of the new pound coin, but then again, I hate all change'