This is the sixth episode without a Blacklister number.
During the 1995 flashback in Robbie's room are clearly visible some posters of famous music bands of the 80s and 90s, such as R.E.M., Red Hot Chili Peppers and Smashing Pumpkins. There's also a Muse poster on the left, but in 1995 Muse were almost unknown even in the UK, since they hadn't already published their first EP.