Hello and welcome to this forum!
WEll, the question what a good set of congas is has been discussed thoroughly over the past years.
Especially if you are just beginning, this thread might be useful:
viewtopic.php?f=14&t=3169&hilit=matador+LP+qualityIf you ask me, you can´t go wrong with a decent set of Meinls or Matadors. I mean the older generation,
as there has been a decrease in quality on this midprice level. Watch out ebay or elsewhere, I would prefer
fairly-priced good set of used congas over them brandnew crappies

(Aspire and the like)
Plus the money factor: 250GBP are roughly speaking 375€, aren´t they? A showroom model may show up for 350€
if you´re lucky.
Good luck to you!