Stuck chain links advice?

[Gnasher]

I have noticed a number of stiff/seized links in my chain, I have taken the rear wheel off and done my best to free them up some were easier than others....

I'm sorry to say the chain has had it.

I'm surprised this has happened as the chain and sprockets looked like they were quite new when I brought the bike and it gets regular (daily) use and I regularly oil the chain (holts lube).

It's very possible it was fitted badly/adjusted incorrectly/cheap chain.  The amount of chains I've had to replace with a few 1000's miles on after they've been fitted badly is scandalous, many just have little or no idea how to fit them. 

Perhaps the previous owner neglected the chain abit or its a cheap chain, not sure.

More than likely.

Is they anything product or process anyone is aware of which might help revive the chain abit, it would be nice to try and get a few more miles out of it as its otherwise quite unworn.

If it's an O/X ring chain there's little that can be done as by definition the O/X rings that stop the grease getting out stop lub getting in. You will be able to nurse it for a while but there is no way of reversing the damage and it will only get steadily worse.  If it's not O/X ring lubing will help but only to a point. 

Also I just purchased two new tyres and a carb rebuild kit so rather not spend another £100 on it at the moment...

Why do you need to rebuild the carbs?