My workplace pension is with these guys.
I've been with my employer for 5 years and, at present, hope to stay for many years to come. (I'm early 40s).
People's Pension/BC&E (whatever they are calling themselves these days) don't allow "partial transfers". A bit of a misnomer but basically means you can't move money/investments from them to another provider (eg Vanguard where I have my SIPP) unless a) your employer leaves the scheme; or b) you leave your employer.
There are v limited options to choose from when investing with People's Pension. You can't choose funds as such, you can only choose what % of your money is invested in stocks - 100/75/50 etc.
I believe some of the other Government-mandated workplace schemes are similar. Apparently it's engineered like this to "keep costs down". Albeit PP find the money to advertise all over the bloody place.
Vanguard is not (yet?) an approved workplace pension provider so can't even petition my employer to switch to them.
I think this all stinks to be honest. What happened to fair competition? And "pension freedoms" where you can make choices re your OWN money? I would want to transfer my money to my SIPP regularly but no, I'm stuck with PP for 20+years.
I'm surprised some of the youtubers eg James Shack and Damian Talks Money don't make a bit more of this.