Nichola,
You are talking to someone who has dealt with Teachers/Prison Officers and many other public sector workers and their retirement plans - so I think I know what I am talking about when I mentioned Final Salary pension Schemes - but just in case you are confused please read this extract from the link you posted above:
Most pension Schemes in the public service are Defined Benefit schemes -
the pension benefits are specified or defined in the rules of the scheme. Thus
the scheme member knows the calculation formulae which will determine the
level of benefits due at retirement. Furthermore, public service schemes are
Final Salary defined benefit schemes - the benefits formulae are based on
the level of pensionable pay at retirement. The formulae are set out in the
Table below.