I'm a UK citizen who has lived in the US on two occasions (for almost 2 years in total), so although I don't have all that much US experience, here are my thoughts:
1) I haven't really had a major problem with customer service here in the UK. The only real problem I've had with it has been in the last few weeks, when sorting out the gas bill and account in our new flat (the previous owners didn't pay their last bill and the estimated reading on the notice was almost 1000 units less than the meter says... it's been a nightmare getting them to change the reading and send us a correct bill!). What I don't really like is the US customer service where the staff are in your face and constantly asking if you need help... I've noticed that more UK companies are doing this now and it's annoying - if I need help, I'll ask; otherwise, leave me alone

!
2) I don't really notice the taxes... yes, it's annoying to lose money in your paycheck and that frustrating that VAT is so high, but there's nothing I can do about it, so I just accept it. I've never owned a car in the US, so I don't know how much it costs to put one on the road there, so to me, car tax and insurance costs what it costs and that's what I have to pay if I want to drive my car (this thread has actually just reminded me to renew my car tax because it runs out at the end of the month).
3) Having spent much of the last 10 years working in retail in between university courses and finding a graduate job, I am so grateful for shorter trading hours in the UK! Sure it's annoying that the shops close early on Sundays, but I've had to work every other Sunday for the last 2 years and it was wonderful only having a 6-hour day and being able to go home at 5pm

. I am also extremely grateful that I now have a regular M-F 9-5 job because if I'd still been in retail (I only left retail 9 weeks ago), I would have been working various shifts between 8 am and 10.30pm, including weekends, leading up to Christmas!
4) I'm not keen on the high cost of petrol in the UK, but that's just something I have to deal with if I live here (and I moved back to the UK from the US because it's the country I want to live in). I haven't got any utility bills to compare with in the US (all my bills were included in the rent there) so I don't really know what is high and what is low in comparison.
5) I am a big fan of the NHS - one of my big worries when I moved to the US was how I was going to pay for and deal with medical care there if I got sick (thankfully I didn't though). I have never personally had any problems with the NHS - I've never had to wait more than 10-15 minutes to be seen when I had an appointment and I've never had to wait more than about 48 hours for an appointment. My prescriptions are mostly free and all my appointments are free (upfront, of course). If I have an emergency, I don't have to worry about payment. I haven't ever had to stay in hospital or wait for a procedure though, so I can't speak for that side of things (the only thing that's happened to me is when I broke my leg at age 12... I was in and out of the A&E in 2 hours, after having had X-rays and a plaster cast put on and it didn't cost a penny).
I think the TV Licence is extortionate!! Over here you have to pay that whether you like it or not and if you have cable, then you have the monthly cable bill to pay ON TOP of the Licence fee, whereas in the USA you only have to pay the monthly cable bill and no TV Licence!!
In the UK I pay:TV licence = £145 a year
Digital TV, broadband internet and phone line = £31 a month (£372 a year)
= £517 a year
In the US I would have been paying: Digital TV, broadband internet and phone line = $99 a month
= $1188 a year
= £752 a year
Which means that even including paying for a TV licence in the UK, I would still be paying about 50% more in the US for the same services.