Re: tourist rates vs market rates
FX centre quotes the mid-rate (between the buy and sell rates in the market). The tab beside this quotes the forward (fwd) rates that are currently traded in the market, representing market consensus on where the rates will be in 1, 3, 6 and 12 months time. Their "morning comment" etc. are purely opinions.
Tourist rates are set daily by banks and include a wide margin for movement in fx rates to ensure the bank makes a profit.
If you have a significant amount to convert from GBP to EUR the tourist rates should be of no interest, you should be looking for a rate as close to the mid-rate as possible. This can be obtained from an fx dealer in the treasury dept. of any of the banks etc. (through your usual contact or local branch). Also, don't be afraid to phone a number of them and to shop around.
I am not sure of the amounts involved, but I would caution against trying to time the conversion, even over a 6 month period. Investigate the possibility of hedging the transaction at a price you are happy with.