I have a (now EX)friend who has just returned to the UK from the Middle East talk about transformation, She cant leave the house without the Maid in tow, lost all ability to clean, cook or look after her children. She looks down her snooty nose at all things British and slags the UK off at any given opportunity yet shes having an operation on the NHS (despite not living here for the last 5 years) and sending her eldest to Uni here (home status)
Mrs Bucket, springs to mind.