A few weeks back my sister went into Apple green petrol station Walworth rd 7.30in the morning on her way to work put ?16 worth of petrol in her car .also bought a drink.went to pay with card .then discovered she's left it at home.she only lives round the corner never carries cash after speaking to a staff member and leaving her phone as security she was allowed to leave and returned in 10 mins to settle up.now she carries ?20 on her just in case.I did laugh because l think cash is king.also exdulwicher I've stood in queues someone in front bags up their shopping then as their card declined works both ways 😉