Fitting new mixer taps

[Sonyman]

We have bought a new sink and mixer taps, which have tials on the underside tapered from 10mm to 12mm then to 15mm over about 12 inches.

The old taps had the flexible hoses whith service valves fitted onto the pipes with compression fittings. These hoses come upto the underside of the worktop, so how do I fit the new taps to these, as it looks like something needs to be cut down in lenght or ???

Thanks

 

[Sonyman]

I have just had another look at where the new tap will go, in relation to the old ones, and the end of the tails on the new mixer tap is just about at the bottom of the service valve on the flexible hoses.

Whats the best thing or way round this please?
Thanks