The Welsh and Scottish governments have urged Theresa May to work with them to prepare the UK for Brexit.
The call came as first ministers Carwyn Jones and Nicola Sturgeon published a series of proposed amendments to the UK government's EU Withdrawal Bill, to prevent any loss of devolved power.
Mr Jones said: "One government cannot simply hijack powers from the other two."
The UK government said Brexit would result in more power being devolved.
The UK government has said the bill is needed to guarantee future trading arrangements immediately after Brexit.
Source : http://www.bbc.co.uk/news/uk-wales-politics-41307652