Just prefix the 9-digit Spanish number with country code +34, including the plus symbol.
(The plus sign means "insert your international access prefix here." From a GSM mobile phone, you can enter the number in full international format, starting with the plus sign. The most common prefix is 00, but North America (USA, Canada, etc.) uses 011, Japan uses 010, Australia uses 0011, and many other countries use different prefixes.)
+34 (including the plus symbol) followed by the 9-digit Spanish number
Dial the UK mobile number in full international format: replace the trunk prefix 0 with telephone country code +44 (including the plus symbol).
To call a UK-based mobile phone, anywhere in the world that it may be physically located, just dial the UK mobile numberexactly the same way you do when the mobile is in the UK.
00 44, plus the UK number without the leading 0.
+44 (for the UK), then the full mobile number without the leading zero. for example, to call 07999 999999, you would dial 0044 7999 999999
Where the UK mobile number is 07xxx xxxxxx dial either +44 7xxx xxxxxx or 00 44 7xxx xxxxxx. It doesn't matter which country the other phone is being used in.
To call a UK mobile from a UK landline, you always just dial the UK mobile number, exactly the same way you do when it is in the UK. The network will find the mobile automatically, and the mobile user will pay any applicable surcharges for international roaming.
The country code 00349 corresponds to Spain. When dialing from abroad, you would use this code followed by the local number. Spain's international dialing code is +34, and the leading zero is omitted when using the international format.
Code to ring Spain on a mobile from England?0034 Enjoyyy :D
To call from Spain to Gibraltar, you now must use the full international number, 00 350 followed by the Gibraltar number.
"Lebara mobile may be obtained across Europe, in Spain, the United Kingdom, and Australia. Lebara mobile is noted to be one of the top five mobile operators in Spain."
00 61, and then drop the leading 0 from the Australian domestic telephone number.