Fuel filter headache

[Stu T5-R]

Hi,

I've recently bought a 2011 V50 1.6 D2 Drive and decided to give it a service. All gone well until the fuel filter replacement. I bought the recommended Bosch F 026 402 864 from Eurocarparts and set about changing it. The filter I've taken out of the car is marked as a Crosland F30499. The Bosch filter won't fit into the car. The top end is the same, but the drain nipple on the bottom has a small ridge on it rather than being a straight pipe, it also has a plastic bit around it straight out of the box (I don't mean the dust cover). Also the indentation on the side of the housing appears to be slightly further around than the one I've taken out of the car.

So I headed off to Halfords this evening and they have sold me a Crosland F30500, its what they think it should have and the only one they had in stock.

The F30500 appears to be exactly the same as the F30499. Also it states on the box that its compatible with/or a replacement for the Bosch which I've already bought (and doesn't fit).

So questions are are:-

1) is the F30499 I've taken off the car the right one or has someone fudged it in in the past?
2) why does the F30500 state is it compatible with the Bosch F 026 402 864 when the latter doesn't fit my car.
3) is the F30500 an upgrade to the F30549?

It ridiculously confusing