Ros states the intelligence she obtained in Russia is heavily encrypted, but when she uploads it from her laptop, it says "uploading decrypted files".
Ros's laptop shows a data rate of 250mb_min. That would be millibits per minute. Megabits would be Mb, and data rates are usually specified as per second (although a phone in 2008 would not do 250Mbp/min which is about 4.2Mbps).
An explosion of a big car bomb would shatter windows for some distance, yet none of the surrounding windows are broken (effects budget limitations).
The name of one of the terrorists - Munzir Hatem - is misspelt ("Muzir Hatem") on the MI5 photo of his house.
Lucas translates his tattoo "Dum Spiro Spero" as "While I live, I hope," but it should more accurately be translated "While I BREATHE, I hope."