missing episode?

Can anyone else remember these incidents in The Detectives which I can't find on the DVD'S despite having all 5 series.
In one incident Briggs and Louis are dressed as prostitutes and have trouble with their personal radios and in the other they have rubbed drugs onto their gums and are driving very slowly when Louis says to Briggs 'are you driving Dave or am I?'
Is my memory playing tricks on me? Did these events happen?