JWJ

Hi I am self employed as a chauffeur I regularly park my clients car at Airports and claim the costs back from him approx £600 a year, likewise I occasionally fill his car up approx £500 a year which he uses I only use it when collecting him. Are these costs a disbursement as opposed to a recharged expense? I am not VAT registered but my expenses are negligible and the £500 parking fees and petrol costs take me over the £1000 employment allowance, if it is a disbursement I believe I can then claim the full £1000 allowance thus saving me tax?