I have just got O2 broadband for £7.50 a month having signed up to a month by month simplicity SIM only deal. This has brought over my phone number from Orange.
I have previously struggled with poor, unreliable connections until moving to O2. The O2 connection is stable and quick. The router, whilst bascically a Tompson in an O2 shell does the job. For the first time, my laptop and PDA don't drop signal and make use of the near 8MB speed. This was not the case previously (0.5 meg at best).
O2 send you texts at each stage after the MAC code transfer, router delivery, line connection etc and were spot on. Their helpline is free and quick.
At last, something that works with a decent customer service and a decent price. This review may sound a bit over the top but the package is good value, dependable and won't tie you in to any contract. I recomend O2.