It is unlikley the salary situation will improve as in the last couple of years that has been an increased use of Indian and East European sub-contract companies with in the Industry; this puts pressure on UK companies to further reduce costs.
The UK industry has so far survived on the fact we still tend to "know what we are doing" (well Airbus UK seem to be making a good effort at proving otherwise). However as the Indian companies gain experience the technical competence gap is narrowing.