In the late 1700s Worcester were among the first to use the Bute shape for teabowls, tea cups and coffee cups.
Without submitting a photo of the set and especially the Pottery Mark it is very hard to give you any information .
I have uploaded three photos of the three marks of Crown Staffordshire (Thomas Green of Fenton, Staffs) which fit your description.
Although the marks are not "two backward E's", I suspect this is the mark you are referring to.
The pink splash lustre decorated pitchers are made in the North East of England in the Newcastle and Sunderland area.
The silver lustre ware was produced mainly in Staffordshire and Yorkshire.