AssaTM

Hi all, I've recently passed my CBT primarily for a work commute (around 7 miles) and in work I will wear a standard formal shirt and a pair of black jeans - easy stuff and nothing too crazy. I would ideally like the transition from bike gear to work gear to be as seamless as possible but there is literally an ocean of choice and I really don't know where to begin! Do I go with some kind of over the top bike layers so a standard jacket and trousers or what is the general recommendation please? Of course the helmet and bike boots are non negotiables but what should I be looking for without paying over the odds please? Thank you!