Turns over but will not start RAC

Unless I'm wrong , I dont think you have points on your car . Usually ignition coil packs system ( wish they all still had points / distributor ) .Would be good idea to check / replace plugs and also the fuel filter before getting too involved and see if that helps

Thanks service is overdue on it seems crazy to take tank off and replace fule pump without knowing fault lies there...

Correct , may be just the fuel filter partially choked , restricting the flow .On a lot of cars you can hear the fuel pump buzz for a second or two when operating correctly . Another old trick that often works if fuel pump sticking is to cycle the ignition key on / off a few times prior to starting