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Sorry Ladybirder, I'm not ignoring you, and to be honest, I am entitled to use that service, my GP told me that, but I've heard you have to be ready at least 2 hours before your appointment which in this case would be about 6am and I'm worried I might not wake up early enough even with the alarm.
If I can't get any joy with a taxi firm or if they are going to charge me an arm and a leg, I might try the PTS and just not go to bed the night before. :-)
Thanks for the link, I might just need it.