Sainsbury's selling inner tubes. Might be handy in an emergency.

[PearsonRider]

I noticed yesterday that the bigger Sainsbury's supermarket in my town is selling Rolson brand inner tubes for £3.99. They have 700c, 26" AND 27". As they are open earlier in the morning and up to 11pm I thought that it might be handy to know in an emergency, or if you find that you need a tube the night before a ride etc.