Bike Reviews

I’m looking at buying a decent hard tail mountain bike for commuting, and probably for future off-road use. I have up to about £1500 to spend. It’s just occurred to me that there isn’t just the bike to buy; I’ll need tools, spares, lights, and lots of other kit. I’m a bit new to all this. What essentials do I need to buy, and how much of my budget should I use for each item?

Can’t seem to find a dealer in the UK who sells Drumstix truing forks for mountain bike rotors. Found some sites in the US however can’t seem to find any UK dealers.
Any help is much appreciated.