My ex is the applicant although his solicitor would not draft a Consent Order and said I should based on our Open Offers. My barrister duly did this and it has been agreed in principle by the applicants solicitor but they are now asking that I pay half the court fees to file the order; isn't this the responsibility of the applicant or should I pay half?
I think you will find that the court fee for a Consent Order is very small. It would be reasonable for you both to share the costs of drafting and submitting but tbh it probably isn't worth too much debate if it means a settlement that avoids further legal costs.
For the sake of securing a settlement I would stump up the £25 contribution. It's not worth arguing about.
The divorce costs are dealt with separately unless they have been provided for in the financial Consent Order, which is rare.
Your solicitor should be able to advise you on the process for obtaining your divorce costs. The first step is to consider whether a fixed amount has been ordered or whether the costs are "to be assessed if not agreed".