The victim has been named locally as Joshua Folkes, or "Money J" as he was known to his friends. Friends have left cards and flowers at the crime scene. One read:
Rest in perfect peace and you be happy. I hope you're all right up there. Never forgotten.
Another simply said
There has also been an outpouring of grief on social media. On Facebook, Kate Louise Williams said:
This morning we say good night to Joshua stabbed to death last night our thoughts are with family and friends today.
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The 47-year-old man died shortly after 3pm on Tuesday.
Specialist explosive detection dogs searched through the town examining letter boxes and phone booths for signs of potential devices.
Temperatures reached 29.1C in St James's Park, central London.