Should arrive within two days of being mailed.
It all depends on which service you used. In the UK there are several ways to send items. By Post, first or second class standard. First or second class recorded. Special delivery. Courier by many different companies. They all have different delivery times.
48 hours by "DHL"
2'10
14H 20m (Manchester - London - Boston)
About 4 hours.
About 4 hours.
About 2 hours 45 minutes. You have to change at Manchester Piccadilly
London to Manchester by car is a distance of around 210 miles and would take approximately 3 hours 45 minutes.
It's about a four hour drive.
About 3 hours
Manchester-London-Athens-Santorini: approx. 7 h with Aegean Airlines and Olympic Air.
There are no direct flights from Manchester to Lagos Nigeria. You will need to take a flight from Manchester to London Heathrow which takes about 30 minutes, and then an interconnecting flight from Heathrow to Lagos, which is about 7 hours long. That combined with the Manchester to London flight will take about 7 hours and 30 minutes in total.
A 50 g parcel from Texas to London, United Kingdom, will take between 2 and 4 working days with FedEx. The exact length of time will depend on the type of service chosen.