Thanks for all the replies, looks like the Gorilla tape is okay and works but like the look of the stuff Daffy linked I even better, will also be a little cheaper than Stans as I have a few sets to sort.
As for Andylc’s comment, yes I have a few £000’s worth of bikes but have brought and built them mostly new but saved 000’s on RRP, Reverb £130 new, just brought some new Pikes £340 etc so yeah every £ I can save is a bonus! Yes I was looking at a £10 saving but that’s enough to buy the fluid! The question was not so much about cost but product effectiveness, if it was as good or better I’d go for the cheaper every time on something like rim tape that is hidden away. I’m sure it would be nice to live in a world where I didn’t need look at prices, the day that happens will be the day I’ve got too much money.
PS my bikes are very nice and probably much cheaper than what others have paid for what I would consider a lower quality/standard, I could neither afford not justify biking equipment at RRP!