Pa - few things here.
Regarding savings accounts there are a number of different options available. The longer you tie in your money, the better the rates are.
The worst kind of savings accounts are high street savings accounts. They fool their customers into thinking they are saving their money whereas the % are so low it's really not benefiting the customer, just the bank as they have cash they can trade with.
I've detailed some thoughts below - but happy to expand if you have any questions.
Firstly, the Barclays e-savings is a fairly crappy account, only paying 0.10%. Unless you are going to be using the e-savings reward. That's at 1.25% gross. There are still better savings accounts especially if you can do without needing the money
Secondly, with all savings accounts you'll usually have to have these transferred from a UK account. Only current accounts allow foreign (SEPA) transactions. If you decide on the Barclays e-savings account, just open a current account; have the money transferred there and set up a standing order that money from current account moves to savers account the next day.
You might prefer a regular savers account. This is where you have to pay a fixed amount into a savings account each month and can get a decentish rate of return. For instance First Direct are offering 8% if you invest between £25 - £300 every month into a regular savers
http://www2.firstdirect.com/1/2/savings/regular-saver-account;jsessionid=0000sjC25TzdYStdvMa5x46tbwv:11qkqgmtb?clear=trueA word of warning - if you miss a payment, they won't honour the 8%, and whatever value you put in month 1 is the only amount you can put in subsequently (eg can't have £25 month 1 and then £150 month 2, would always have to be £25)
If you don't want your money tied up for a 12 month period, then you might want to think of a 90 day notice account. Companies like Aldermore
http://www.aldermore.co.uk/personal/ offer 3.1% for your money as long as you give 90 days notice to get it back. With this particular account from Aldermore, they do allow you unlimited withdrawals and deposits but you need to keep a min of £1000 in there.
You also want to think about tax. Do you know if your pension has already been taxed in Germany? If so, you want to make sure you don't get taxed on it in the UK.