There are still plenty of opportunities - you just have to be patient and wait to work the better setups. problem is that the general volatility in LIFFE interest rate markets is so low at the moment.
But realistically, UK & European interest rates have been stagnant for the last two years and that looks like it will start to change in the coming months. hopefully will give rates a bit more to key off of.
I'm scalping calendars in Euribor, Short Sterling and Eurodollars. But I agree, it has been a tight curve in all the spreads