RogerOut:
It’s only three days a week and some people don’t mind doing weekends anyway.
The pay for a 3-day week would make this an excellent opportunity - if it were not for the weekend premium already being built into it. 
People want to clear £500 per week for as few hours as possible. If it takes 5, then people will work five. If it takes 4, then that’s better. If it can be done in THREE - then we might finally be getting somewhere with the old “Work/Life Balance” issues. It is fair to say that “Any five from seven” being the only way to achieve a “Bottom Line of £500” - then I’d suggest that people delve a bit deeper into the actual pay structure of job ads. The big thing that lets This ad down - is that the quoted wage is clearly nowhere near £500 per week. It is alas, “Pro Rata”. When you DO see £500+ per week in the ad itself, then invariably the HOURS then don’t get mentioned… £500 per week take-home (£740 gross) for 36 hours - is a good deal Anything more? - Probably not. To take home £500 per week for 40 hours, you’d need to be grossing around £16-£18 per hour AND be paid for your breaks… Tax and insurance combined - knocks a full third off most people’s wages, don’t forget.
Royal Mail too - are also advertizing full-time directly employed contracts for 36 hours over 3 shifts… BUT they are looking to recruit young, fresh drivers with no more than six points on licence, rather than old hands, ex-hands, or people like me with zero points on their licence that had no idea how unpopular we were…
If RM management think going out of their way to recruit Boy Racers (like the knobend RM driver from Ditton that rear-ended me in 2014) whilst knocking back someone anyone who’s held a spotless licence for 30 years is “A good idea”, then I suggest RM high command need to check their management structure for where the financial leaks in that business are occuring. 
Any new contract is hardly going to be better than any old contract. It is all about dressing it up to make it look better, when close scrutiny will uncover otherwise…
The Discounters meanwhile, have got around this issue by making “Non-Driving Duties” a major part of the driver’s job there.
Each firm has it’s different structure in place then, that you might really like, or absolutely despise.
I have no desire to ever top-line £1000 per week - if that means stupid O clock starts, 5-6-5-6 working months, putting up with constant backbiting at the workplace, or anything else likely to shorten my life.
Come April 2022, I would imagine a large number of other workers - will wake up and smell the coffee, realize that there’s no point trying to push the boat out, only to lose all your extra efforts in “higher taxation” - and will once again, turn the gaze upon one’s belly button, and consider the working life balance argument. FFS Most of my colleages out there, “average age 55” etc. - must have less money worries than their younger counterparts, these days… Saying a driver MUST work 60-84 hour weeks because they have huge overheads, sounds like the explotation that takes place in the ■■■ industry, where the very best ladies are enouraged to develop a drug habit that then requires earnings much higher to feed - but overall, leaves them no better off…
NO one has to be addicted to “Overtime”, “Long Hours”, “Crappy Conditions”, and total lack of respect in the workplace, where drivers all-too-often get talked AT rather than “To”.