Complex sentence: Their use is controversial and they are often perceived as being overzealous, in the UK this is likely due to high pressure management focused around delivering a certain number of tickets per day leading to allegations of corruption and illegality.
Split into simpler sentences: Their use is controversial and they are often perceived as being overzealous. In the UK, this is likely due to high pressure management focused around delivering a certain number of tickets per day leading to allegations of corruption and illegality.