Brake levers for tops of drop handlebars

GJ255

I have a new pair of 26mm drop bars and want levers up on the top of the bars (and not on the hoods), but far from the stem (where the bars are 23.8 mm wide I think?) --- the problem is, I can't find levers that are a) not suicide levers, requiring the cable to be fed through from the hoods, b) are the right diameter and c) have hinges so that I won't have to remove the handlebar tape and slide them on from the ends.

I was wondering if anybody had any advice on where to find such levers etc.

Cheers