Yes, you can clain your reimbursement.

Here are some details from University of Nottingham: 

Costs will be reimbursed for the following incurred expenses:
UK Visa Fee      
Initial NHS Healthcare Surcharge
Additional fees paid for fast-tracked visa processing

Costs will NOT be reimbursed for the following incurred expenses:
Flights & Travel costs: National or International
Fees for failed visa applications
Fees for Proof of English Language Ability tests
Fees for Medical Tests
Fees for visas granted before being offered an MSCA position at UNOTT
Incidental costs