From 15 June 2007, if you are travelling to or from a country outside the European Union (EU), you will need to declare any sums of cash of 10,000 Euro or more (or the equivalent in another currency) to HM Revenue & Customs (HMRC).
You do not need to declare cash if you are travelling to or from another EU country
as for the phils
Currency Regulations
It is illegal for any incoming or outgoing passenger to bring in or out Philippine Pesos in excess of P10,000.00 without prior authoirty from the Bangko Sentral ng Pilipinas. Any violation of this rule may lead to its seizure and civil penalties and / or criminal prosecution. (BSP Circular 98-1995)
The transportation of foreign currency or monetary instruments is legal. However, the carrying of foreign currency in excess of US$10,000.00 or its equivalent in other foreign currencies must be declared to a Customs Officer or the Bangko Sentral ng Pilipinas. VIolation of this rule may lead to seizure and sanctions, fines and / or penalties
http://www.philippine-embassy.org.sg/index.cfm?GPID=100