The British would, tradewise, never fall below #3, likely #2.
As long as they had the vast colonial Empire and the Dominions as junior trading partners, who give them access to an incredible range of raw materials and places (especially the colonies) to sell finished goods, that is not going to change. The U.S. had the same sort of advantages with almost everything located within national Borders. Germany will, assuming it takes all the French colonies (which might just get the two empires engaged in a colonial war, given the Royal Navy's advantage in numbers, coaling stations and relatively strong overseas contingents, I'll take the British and spot the Germany five points) still be #3.
If anything the RN jacks up its building program precisely because the HSF remains a threat, and could pose a problem if the aforementioned colonial war were to break out. A British Empire that has not fought a long and almost absurdly costly, both in blood and treasure is still relatively wealthy (for one thing it hasn't had to pawn the Crown Jewels to cover loans from the United States to pay for the war). The USN is also not seen as pretty much a friendly power, at least not to the degree IOTL, something that also will encourage the Exchequer to hold the purse open for the Admiralty.
Russia was a dead body simply looking for a comfy place to fall down. Win/lose/draw the Tsar had mismanaged the country to the point that the only real question was what form the Revolution would take (IOTL it took the worst sort, especially for Nicholas and his family, violent regicide and murderous oppression of all opposition). The late Senator John McCain famously described 2008 Russia as a "Third World Country with a gas station", in 1918 Russia was a Third World Country with a bakery.