Britannia by Daniel Steibelt is a virtuosic work typical of his Classical keyboard style. It is characterized by sparkling passagework and idiomatic writing that highlights the brilliance of the fortepiano.
The primary challenge is maintaining clarity and evenness in the rapid scalar passages.
Comparable difficulty and character — good candidates for what to learn next.
Britannia is rated Henle level 3 of 9 — late beginner repertoire, roughly ABRSM grades 4–5. In the RCM system it corresponds to about level 4.
You should be comfortable at Henle level 3 — meaning you can already play level 2–3 pieces cleanly. Learning it one level early is possible as a stretch piece, but more than that usually leads to months of frustration.
A typical performance of Britannia lasts about 4 minutes.
Britannia is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.
Pieces at a comparable difficulty and character include Alexander's Ragtime Band by Irving Berlin, 'S Wonderful by George Gershwin, Solfegetto in C minor, H 220 by Carl Philipp Emanuel Bach — see the full similar-pieces list on this page.