Try M&S…they always have a great selection that won’t break the bank.
Don’t bother spending on the ‘named’ brands like Trinny & Susannah…not worth the money..just as good on the high street.
Spanx is good but Dunnes can be good too…It comes down to comfort and that is not about the brand but what its like when you try it on! Yes you will look weird trying it on over tights in the changing room but the only way to know!
Oh and try out the all in one Bra & knicks combo. If you find they roll a lot this is a great alternative. Just make sure you get the correct fitting bra..
Good luck! x