An exchange rate is the price of one currency in terms of another and will impact any business that imports or exports goods or services from other countries.
Currently: £1 = $1.24, £1 = €1.17, The £ is quite weak
Strong
Pound
Imports
Cheap
Exports
Dear (expensive)
The pound is stronger when the other currency is worth more than £1 (e.g. £1 = $2.50)
Weak
Pound
Imports
Dear (expensive)
Exports
Cheap
The pound is weaker when the other currency is worth less than or not much more than £1 (e.g. £1 = $1.20)