I know nothing about pensions... what should I do?

Talk to an IFA, or look into get a SIPP (Self Invested Personal Pension). Either way, you need to do some reading. Hargreaves Lansdown are supposed to be good for SIPPs, so have a look on there. An IFA will sort out all the pensions for you, but it may not be cheap, or carry a trailing commision that will cost you, but depends on how involved you want to be in it.

Be very wary of "consolidating" plans. In Financial Services every action means someone takes a cut and it is always a percentage that does not reflect the minimal work done. Even small bites now mean £1000s loss to you at 65+. Also beware you may also lose the employer's contribution. UK once had pension plans the envy of the Western World - now they are in a total shambles. If you end up with a small pension (90% of people do after a lifetime's work) you may not qualify for pension uplifts that people who have never saved for one get - so you lose out again. You pay tax on pensions and the rules keep on changing to ever more complex as they "simplify" things, so try to have a balance with ISAs which are tax free and remain totally under your control.

Stop paying into any more pension plans and do nothing with the ones you have , look again when you're 60.

'that does not reflect the minimal work done'. Cornubia, when was the last time you did a pension transfer?