Permanent or to cover a broken 734?
Looks as if it is being used to cover a unserviceable 734. The following 734's are currently out of service
G-DOCG - Has been at BA's GLA Maintenance facility since 30th July
G-DOCO - Last operated 13th August
G-DOCW - Has been at BA's GLA Maintenance facility since 3rd August
Titan are also continuing to operate a 737 and a 757 for BA ex LGW. The following flights are showing as being operated today by Titan.
737 (G-POWC) - BA2622/BA2623/BA2666/BA2667 (LGW-NCE-LGW-RAK-LGW)
757 (G-ZAPX) - BA2606/BA2607/BA2716/BA2717 (LGW-NAP-LGW-AGP-LGW)