Its only those 1 million account holders (cars) that are going to be hit with a 33p rise per crossing, probably to offset the £81 million and growing owned by drivers of foreign vehicles since the toll booths were removed.
Labour told us they needed it for running repairs. The RAC/AA got involved and that changed to keeping emissions down, (that's why there can be a 15 mile tailback some days!!!). Now afaik it's privatised.