Clinique Superprimer (in pink tube for dullness). A really recent discovery for me, but I'm amazed at how much better my makeup goes on over the top - smoother, and long lasting, so I still look ok after a long day at work.
Mac Studio fix liquid foundation - I've been using this for years and years, see no reason to change.
Boots No 7 loose powder - very good and not too spend, especially with a £5 voucher
Clinique powder blusher in Shy Blush
Bobbi Brown metallic cream eyeshadow. Amazing colours which are 'build able' depending on whether you want subtle or more dramatic. Seem quite expensive but with daily use, one lasts me 8 months. Love Antique Gold and Galaxy.
MUA black eyeshadow used as eyeliner. Discovery of the year - £1!
Clinique High Impact Mascara. Just really really good, build able daily use mascara. Doesn't smudge or irritate (I wear contacts)
Liz Earle lip gloss. Lovely flattering colours, not too sticky.
Bobbi Brown Sheer Lip Colour. Great under gloss or on its own. A lighter textured lipstick - I love 'Carolina', a lovely rose.
Make up brushes - I think it's hard to beat The Body Shop brushes, I don't think they are worse than my Mac/Bobbi Brown ones, but are way cheaper.
And that's about it! I use the above products pretty much every day and they don't let me down. Most are not cheap as chips but I much prefer buying fewer products and loving them, as opposed to buying more and having them not really doing what I want them to. How exciting to buy everything from scratch, good luck!