Alternatively you could get them from here http://www.abcomponents.co.uk/09-6262-25-XX.

For dark grey (anthracite), the XX is 05.

They cost about £6 each and can be delivered (FedEx). I bought 6 (for the new boat) and the delivery charge was just £6. I received them within 24 hours of ordering (and you don’t need a VAT account!).