If it’s the sink tap in the kitchen area then I too have had to replace it. I now make sure all the water is removed before winter storage. When you drain the system, blow up a balloon, place it over the tap and let go. This will blow our the water gently. To replace the spout take a look at Caratech.uk they will supply a new spout for about 12£. Just pull off the old one, smear the base and rubber ‘O’ ring with some Vaseline or olive oil and push on the new. Now need to dismantle the whole tap assembly and fixed in minutes. Simples!