Four people have been convicted of the murder of the 17-year-old last year, and a firth person was found guilty of manslaughter.
Tavis was attacked by a group of males on Saturday 2nd June 2018 on Packard Avenue, and died a short while after he arrived to hospital.
He was followed by his attackers as he walked back from Queen's Way shops,who then stabbed him 15-times and smashed a bottle over his head. One of the stab wounds proved to be fatal.
Over the past two days, Thursday 14th March and Friday 15th March, the 14-week trial saw five people found guilty.
The four convicted of murder are:
Aristote Yenge, aged 23, of Spring Road in Ipswich.
Adebayo Amusa, aged 20, of Sovereign Road, Barking, east London.
Kyreis Davies, aged 17, of Turnstile Square in Colchester. Judge Martyn Levett lifted a reporting-restriction after a request from the media, which allows him to now be named.
Isaac Calver, aged 19, of Firmin Close in Ipswich, concluded the convictions today.
Callum Plaats, who's 23 and from Ipswich, was found not guilty of murder but was convicted for the manslaughter of Tavis Spencer-Aitkens.
All five found guilty have been remanded in custody, until their sentencing hearing which will begin on the week commencing Monday 29th April.
42-year-old Leon Glasgow, of no fixed address, also stood trial accused of murder, but was found not guilty of that offence or manslaughter.
The court heard, during the trial, that Yenge, Davies, Calver and Plaats were part of a group called 'J-Block' which is based around the Jubilee Park area of Ipswich, while Amusa was known to associate with them and occasionally appeared in music videos they recorded.
The group had a rivalry with another group of males called 'Neno' or 'The Three', which is a reference to the IP3 postcode area of the Nacton Estate, who Tavis was friends with.
Often, encounters between the two groups would end in violence.
Earlier in the day on which Tavis was murdered, Yenge and Davies took refuge in a shop in Ipswich town centre after being spotted by two members of ‘Neno’.
The two ‘Neno’ members taunted them shouting out "IP3”, before a plain-clothes police officer heard a disturbance from out in the street, entered the shop and escorted the ‘Neno’ members out.
It's believed that the shame and loss of respect that Yenge and Davies would have suffered by hiding from two members of the rival group, is what fuelled the motivation for the fatal attack of Tavis Spencer-Aitkens.
Detective Chief Inspector Mike Brown, of the Major Investigation Team, said: "The murder of Tavis Spencer-Aitkens is one of the most senseless acts of violence I have experienced in my career as a police officer and an utter tragedy for his family and friends.
"Tavis had done nothing to provoke this attack and was quite simply in the wrong place at the wrong time when the defendants arrived at the Nacton Estate looking for anyone connected to ‘Neno’ to attack.
"To stab someone 15 times because two members of your group had supposedly suffered a loss of ‘respect’ by running and hiding from two members of a rival group is beyond comprehension.
"Their actions were not only extremely violent, but also completely cowardly. Tavis had no chance of defending himself when set upon by this group, in what was a frenzied attack lasting less than a minute.
"The whole investigation team has been determined from day one to achieve justice for Tavis and his family and so I am extremely pleased by the verdicts handed down to the five defendants who have been found guilty for their part in the attack.
"However, these verdicts will not return a 17-year-old boy to his heartbroken family and so we must all work to ensure that Tavis’ legacy is an end to this violence.
"Knives have no place on our streets and we must educate both children and young adults, who think that carrying one will make them safer and offer protection, that the reality is there is a greater risk that it will either be used by the person carrying it, or against them.
"I don’t want to watch another family suffer as Tavis’ family have. Knife crime is a societal issue and it is incumbent on all responsible authorities - including the police and councils – to work alongside the many support agencies and with local communities to eradicate this evil.”
Leon Glasgow, who was not part of 'J-Group', would buy drugs off people associated with them and on the day of the attack, was offered drugs to give the group of attackers a lift to the Nacton Estate.
Throughout the trial, he maintained that he did not have any prior knowledge of the planned attack when he agreed to supply them with a lift.
Images from Suffolk Police.