Sounds pricey to buy a dpf and get it cleaned and then remapped. Are you aware that Autolusso do a new dpf, sensor, remap for about £700? Probably would make more sense to do it that way.
I contacted a dpf cleaning company who ultrasonic ally clean them, but all they said to me was that it's probably better if they source a new dpf. I suspect this is their business plan, get you interested and then try and flog you a new one.
Alternatively, there's the Wurth dpf cleaner that maybe you can spray in your dpf before fitting it. Then do a force regen straight after. It usually goes in through the temp sensor orafice, but you could get it better spread without the dpf fitted.
GT 3.2 V6 - Q2, KONI FSD & EIBACH PROKIT, GTA REMAP, MICHELLIN PS3's, BMC CDA
159 SW 2.4JTDM TI - ALFATUNED, WIZARD BACK BOXES, KW V3 COILOVERS, NOKIAN WR A3/MICHELLIN PS3, PCA DYNAMICS ALIGNMENT.