Thank you all for you prompt responses. It is appreciate. It also highlights the issue offinding a reliable source to battle Virgin with lol.
I decided to switch my Linksys router off and did a factory reset of the Hub4. I also connected directly into the hubs ethernet port rathe rthan using wifi.
OVH - around 690Mb/s
Ofcom - around 400Mb/s
Fast - 550Mb/s
All rather lower than the 1gig.
Anyway I put the Hub4 back into Modem mode and fired my Linksys WRT32x back up. Ran the check with OVH and got around 460Mb/s. Tried different ethernet cables but no change. This is a different issue I need to address. The WRT32x does have 1gig WAN which I am plugged into.