I think Clive’s name change is easy to explain.
In 2016, 192 has him living in a Tameside address with Yuliya Gurzhii, a Clive Freeman, a Clive Fitzpatrick and a David Fitzpatrick.
In 2016 he is convicted - as Clive Fitzpatrick - of dangerous driving. This is still a first page hit on Google for his name, and they mention the fell running too - so it’s going to stay easily searchable.
All his many running times logged as Clive Fitzpatrick stop abruptly (he was injured, but not that badly). He was 44.
In 2017, you can pick up online running results for a Clive Freeman in the M45 category (over 45s) and in 2019 he’s also got his picture on a meditation sales site as Clive Freeman.
So I reckon Clive Freemen is his dad, and he used the surname. Possibly Fitzpatrick was his mother? So he wasn’t easily searched and linked to his driving conviction past.