Koci Selamaj, 36, was imprisoned for life in April 2022 after murdering Ms Nessa, 28, as she walked through Cator Park in southeast London.

She was struck 34 times over the head with a metal traffic triangle by Selamaj in September 2021, who then carried her up a bank and strangled her.

Newcastle Crown Court officials said on Thursday that Selamaj admitted to wounding one person with intent and assaulting another, causing actual bodily harm.

Both offences took place on 8 May 2023, according to court papers. They are understood to have taken place at Frankland Prison in County Durham.

Selamaj will be sentenced for the new offences at Newcastle Crown Court on 14 June.

Prosecutor Alison Morgan QC said in a hearing in 2022 Selamaj had been violent towards his ex-partner in the past, including throttling her.

He was sentenced to life imprisonment with a minimum term of 36 years.