ESWT is approved by NICE for conditions such as achilies tendonitis, something to do with the shoulder and a few other things but not periostitis of the tibia. I also had a look myself and they are right.
The physiotherapy department have now spoken to my medical insurance the insurance company is not happy to pay for the physiotherapy but not the £10 extra for the ESWT. My physio said he will see if there is a way for them to absorb the £10 as it is their fault I am still suffering. I have an appointment tonight at 7.30pm, so we'll have to see.