Which Ideal Standard tap?

Hi, I am in a 4 year old Redrow 'new'build and the bathroom basin mixer tap developed a small leak, seemingly where the hose go into the tap unit. My skills are not good enough to remove the hoses (seems to be a spring clip holding them in) so I am looking at just replacing the unit. I've called Ideal Std and seems their taps do not have part numbers. They identify by photographs which is fine IF they actually replied, which they do not The tap is closest to the Ideal Std Opus (no waste) B0292, but the Opus tap base is probably too small for the hole in the basin. The other difference is that base of the unit it set at an angle whereas the Opus is straight. Hope that makes sense without a picture... So the questions are: can anyone identity this tap? does anyone know whether Ideal Std make taps specifically for large developers? (in which can I have little chance of a replacement) I would swap it out for something else (that hopefully has a longer lifespan), but it goes with the bath taps Any help gratefully received. Its doing my head in trying to solve this.