Jo Crowley MADRID/LONDON (Reuters) -Santander's plan to buy TSB for 2.65 billion pounds ($3.61 billion) and boost its position in the UK came together just a few weeks ago, after the Spanish bank had been weighing a possible exit from Britain,

Banco Santander and Barclays are the remaining contenders to acquire Banco Sabadell’s UK unit, TSB, Bloomberg reported, citing sources. Sabadell may select one bank for negotiations, though a deal is not guaranteed,

The TSB brand could vanish from UK high streets after rival Santander agreed to buy the lender for £2.65 billion, amid fears the deal could lead to branch closures. The move coul