I had my first service last week and the list of work was the oil and filter and a list of safety checks.
I don't know what else they did but the radio was tuned to FM, the AC was turned down to LO and for the third time, last 2 on my Civic, they left my fog lights switch on.
Radio tuned to FM -> the system could have been upgraded, or the battery has been disconnected.
AC set to LO -> when mechanics change the air pollen filter, often they set the fan to MAX to avoid dust overstep the filter bay. Setting the AC to LOW or MAX usually brings the fan to run at MAX. Another reason could be they sanitized the cabin and air ducts, so they set the AC to max while spraying something in the cabin.
Fog Lights ON: mechanics checked your lamps, and they forgot to set them off.
I gave a look at the receipt posted by JJAZZ, the biggest part of the amount in the bill is labour, not parts as oil, filters, gaskets, liquids... In official workshops the part of labour comes from a preset number of hours multiplied for the our price, I presume that everywhere in UK the price will be the same.