The B2048 ran between Birchington and Stonelees in eastern Kent. It had to TOTSO in Minster en route, where it met the B2047.
The road was downgraded in stages from the early 1990s onwards. The section south of the A299 (formerly A253) was downgraded first and the section to the north followed post-2000. The southernmost section through Ebbsfleet was severed by the building of the new A256 in the 2010s.
Part of the ex-B2048 is still classified: a very short section just north of the A299 has become part of the B2190, whilst the northernmost section of the old road has become an extension of the B2050, although some maps claim the latter is still numbered B2048.