75 Baht to the pound was the first time I went to Thailand which I think was roughly about six years ago. The first couple of years I went the exchange rate used to fluctuate between 70-75 Baht. Then when the pound suddenly lost its value the exchange rate just kept getting lower and lower over a few months until it sort of settled down again at roughly 50 Baht to the pound. I think it's 47 Baht to the pound at the minute.
The free overseas withdrawals from Nationwide ended this summer, with Nationwide initially bringing in a 1% fee for overseas withdrawals. However, as previously stated this increases to 2% plus £1 from 1st November.
However, according to the moneysavingexpert website this is still cheaper than any other bank. My own experiences regarding exchange rates used when you make withdrawals would also confirm this.
As for the £100 minimum deposit, Halifax, the second best bank for overseas withdrawals, also ask for a £100 deposit when you open a current account. I can confirm this personally because I recently opened an account with Halifax to use as my back-up account when travelling.
Although obviously £100 isn't a problem because you obviously spend a lot more than this when travelling so if you want to use an account for travelling then you'll no doubt be paying a lot more than this into it.
As for opening a Halifax account, it was pretty straight-forward. My only criticism was that the advisor didn't offer me the option of opening a reward account (which gives you £5 a month if you pay a £1000 into it) but luckily my mate had told me about this account so I specifically asked for that account.