I called
EuroCarParts, as they are a BERU dealer and was asked about my car. I also told that I'm after a BERU.
"BERU, you say.. Not a problem. £33+VAT"
Good price so I asked again if this is a BERU for sure. "Yes"
Today I drove 20 miles to Reading just to be told that this bunch of f

mappets only have some poxy unbranded leads for £33+VAT!!
And you know what, I was told that I should have known that I cant get BERU for £40 and they just use BERU item numbers!
I was there twice and they fooled me twice. They tried to sell "Bosal" exhaust - which was the cheapest crap. Now I will ask for a written confirmation before going anywhere... at least I went to my favourite kebab takeaway so I'm not that angry anymore
Went to Hallfords - they dont have any V6 HT leads in the system.
Anyway, thanks for info.
I already posted a question on ABS and no response so far...
Just found a Bosch leads on e-bay for £30 (incl P+P). Designed for my Vectra (Omega HT will not fit Vectra V6 - one cable will be too short), good price, from PowerSeller, so I ordered a set... Spent 2 weeks so this was the best solution... Hope it's going to be ok.