Go direct access then the worlds your oyster. TBH its a bit like asking, “I’m a noob, which mountain bike should I get?” It’s a personal thing and everyones advice will differ as to their tastes and experience or lack of..…do some research, read some mags, read reviews etc…..is it purely functional or do you want it to look good too? Purely commuting or will you fancy a blast at weekends too…… which you will. Direct access will open up pretty much anything you like, a good reliable Jap middleweight will see you OK mate and be reselleable easy too. Suzuki SV650, Honda CBR 600 is a mega tool….can do anything, millions to choose from and bulletproof. Honda CB500 or 600 Hornet, cheap and reliable, Kwak GPZ 500. Suzuki Bandit 600 or GS500. The list is long and £1500 will buy you a lot of bike for your money if you use If it wisely and do some reading. If it was me (and I’m using hindsight here), I’d go 500-600cc commuter or all rounder and deffo japanese. You could even get an 80s or early 90s sportsbike for that kinda dough. Stay away from smaller italian or chinese 125s and 250s……harder to resell and not as trustworthy, the japs have the lions share of sales for a reason. Oh, be prepared to have a HUGE amount of fun too, whatever you choose.