why would this be happening
If you go to the last illustration here you will quite clearly see an o-ring and a grab ring. http://www.plasson.co.uk/images/Fittings/plassonuk/cms/2014 Fitting Instructions/Pushfit Fitting Instructions.pdf I'd suggest, assuming you haven't previously taken the fitting apart to "see how it works" and either lost parts or misassembled it, that you failed to get the tube pushed through the grab ring.I am pretty sure it's in tight. In addition I don't think plasson stop tap need o rings.

WTF £1 a month ,ill be very surprised if your covered plus what do you actually think your £1 will cover when you in the shyte
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