http://www.hmrc.gov.uk/cgt/intro/basics.htm
The Annual Exempt Amount for the tax year 2012-13 is:
£10,600 for each individual
you did not make a gain on the Q1
you will not be able to transfer from MTGox to other accounts - that is covered by AML stuff - MTGox is not a bank
you have to transfer it to your account
you may be able to setup several accounts [japan other] and transfer there
also if you want it in 8 weeks you better start the transfer from gox now...
Thanks for the speedy reply. I'm not quite sure I understand your replies totally.
From Q1, I assume that you mean I have no National Insurance contributions as there are no tax implications.
From Q2, I assume that you mean that I would be liable for tax on Bitcoins spent unless I cashed out the Bitcoins into either cash or a bank account of the country I was visiting, rather than spent them.
I only have a handful of coins in Mtgox, and on another exchange these coins have never been to the UK. These would be enough to pay for my honeymoon overseas spending. Thus I could get my tax free allowance this year plus spend the coins abroad as long as I P2P traded them when I was abroad.